If you haven’t experienced suica, it’s like magically fast. Faster than NFC, faster than Apple Pay, faster than tap to pay, faster than Disney magic bands, faster than your work badge. It absolutely floored me every time I used it in Japan and it’s a full payment transaction.
It's not only magically fast, but it's super useful. You can use it at vending machines + convenience stores anywhere (unless it's one of those old ones that only take cash/coins and print paper tickets) and at the shops as well.
People not in Japan/Singapore/Korea/China should experience what a proper transit card done looks like.
I've used a Suica card for many years now. I agree it's both fast and reliable.
One summer I was crisscrossing Tokyo by train over several days, using the Suica card, so I got to see a LOT of commuters. Lots of people were in a hurry and would run through the gates (the default state is open, it closes quickly if your card is out of funds or some other problem). Running through the gates while quickly touching the card to the reader. I've done that a couple of times myself.
It's also useful in that you can pre-order a Shinkansen ticket, for example, and link that purchase to your Suica card, which you then use for the Shinkansen gate. If there are other fees (which there may be) they're just deducted from the money the card holds, as usual. Makes everything very simple.
For me a physical card is easier than using a phone. A phone is so much larger so I would need to get it from a pocket somewhere, while the Suica card I can keep in my jeans pocket or some other easy place.
It was funny during Expo in Osaka on the massive metro station - you could just zip in with the suica, while the less knowledgeable foreign tourists would form long queues in front of the special gates where they could pay by a payment card, which were glacialy slow in comparison.
I also did prefer my plastic Pasmo (essentially the same as suica) card until I learned during my last trip, that it can only be recharged with cash :-/
This doesn't especially bother me, but it is a kinda funny workflow to go to an ATM to withdraw cash (with your bank card) only to immediately put it back into the machine (to charge your IC card).
> People not in Japan/Singapore/Korea/China should experience what a proper transit card done looks like.
In Prague city transit does not have limiting gates. If you bought unlimited ticket, you just walk in bus/tram/metro and that is it. No touching, scanning, showing, nothing. Maybe once a month (or even rarer) you might encounter a patrolling controller who would ask you to show your ticket, but that's it.
I much prefer convenient over fast, being able to just tap my phone's uploaded IC card/alipay without having to open it up or switch cards is maybe 200ms slower, but I don't have to think or change what I'm doing. Plus with alipay it will just autodeduct so I don't ever have to think about that as well, though Apple wallet Suica makes it easy to reload too.
JRE required Suica to be instantly accessible so there's a setting in Apple Wallet to set a card to a default quick transit use card(forgot the exact name). If configured as such, just poking the gate antenna with earpiece end of an iPhone instantly completes the transaction just as fast as a real card does.
(yes, the antenna is in the top FaceID/Dynamic Island area, Osaifu Keitai spec requires a □つ icon wherever antenna is located, which Apple managed to completely ignore)
FWIW on Android, Google Wallet tells me "Transit Cards: These cards never require verification", and indeed I can just wave my phone at the terminal without unlocking it.
Express Mode originally launched as Express Transit with only support for Suica, Beijing and Shanghai cards. It was then renamed to Express Mode when support for the other modes was added.
This is a consequence of the world being eaten by managed code. IBM made POS checkout terminals that were blazingly fast 40 years ago. Now every modern data processing technogy is glacial by comparison.
The story makes clear that constraints matter. Product teams build against specified constraints. If latency isn’t one of them, they’re going to sacrifice it if it helps meet the defined requirements more quickly and cost-effectively.
Every time I see a shoddy piece of work, I know which constraint was sacrificed.
But you should probably just get a suica in your apple or google wallet, you don’t actually need an IC card. I’m not sure if using a phone makes it less fast though, I couldn’t tell (we had to get a card for my kid since he doesn’t have a phone).
Definitely better than the QR codes used by China.
You can use a digital Suica in Google Wallet only if your Android phone has Japan-spec hardware . International Android phones bought outside Japan generally cannot support digital Suica cards in Google Wallet.
As far as I could tell from everything I've read from multiple sources, every Pixel since Pixel 4 _has_ the chip, it's just not enabled and you can enable it with rooting.
I assume it's a licensing issue, where Google is too cheap to pay JR for the phones sold outside of Japan, so only setup the JP models and only pay the license for those.
You can move your alipay card into apple wallet and have it as the default payment method, so do you don't even have to swipe or turn on your phone, it will even work in low-power/off mode.
It was a completely custom standard conceived by JNR/JRE and Sony during 1990s-2000s, that they eventually managed to be included into the common NFC specification through years of lobbying and pressuring.
It reminds me of that oft touted experiment where a light lit up within some number of milliseconds of a person hitting a button, and people perceive it as happening before they hit the button.
Same deal with Opal in Sydney - the old school opal card processes a second or so faster than a card/apple pay/google pay that you can just keep walking. Smashed into the barrier the one time I forgot my card.
Something that is amazing about Sydney’s system though is that as a visitor to Sydney you can likely use the train system without needing an app or any sign up. Just use your credit or debit card via nfc on your phone (or the physical one)
I was honestly so impressed by that, you mean I can just tap on? Don’t need to stand here outside the gates for 10 minutes entering my info into a frustrating app? Don’t need to buy a $10 card, only $5 of which I’ll ever use? Even with suica being pretty easy to set up on iPhone, this is definitely something Sydney’s got over Japan’s system.
Yep, and it's increasingly common around the world. In Australia, it's also fully rolled out in Brisbane and I believe it's just about finished being rolled out in Melbourne too.
I’ve never noticed any delay on the London underground with Apple Pay or a normally debit card - certainly not a second. Havent used an oyster for years but I don’t remember it being faster.
Definitely slower to use a card or your phone in London.
I remember when they first allowed card use more than a decade ago and it broke the flow quite a bit at rush hour as people were so used to the Oyster card's timing that they'd run into the back of people using cards or people using cards would run into the gate as it had not opened as quickly as they were used to. Quite a bit of commentary around it during that time:
I heard from friends that physical Suica cards tend to be difficult to obtain these days at times, but digital one isn't at all.
Took me roughly a minute to create one within Apple Wallet ahead of my trip, and that was it. Didn't need to install any apps or register on any websites, because creating a Suica card is natively supported in the wallet app.
Idk how the situation is like with Suica card on Android though, outside of the fact that unless the phone was purchased in Japan, it will typically lack the necessary hardware for it (which isn't a concern with iPhones, because all regional versions include it).
Well you can get it only in some kind of machines, and you need to pay it cash. Also you need to use cash to charge it, and you can charge it minimum by 1000 or 500 yen at a time depending on the station, not less.
The digital version only works on iPhones, since Android phones sold outside Japan doesn't have the Felica chip, or if they have it (e.g. Google Pixel) is disabled in EU/US firmware because the manufacturer doesn't want to pay a fee for every phone to Sony for something 99.999% of people that will never travel to Japan would use.
It's completely anonymous and available on many ticket machines. There are some half-wrong info that you have to fill in a form, but that's only for commuter passes and registered cards.
You just tap Buy Suica and insert two 1000 yen bills. The system keeps 500 yen as a deposit, which is refunded when you return the card, but it's also $3.50 for a little memorabilia.
If you absolutely don't want the keepsake, you can create a virtual card from Wallet on iPhone(7 or later). I believe an app is not needed through that path. Those can be loaded from your credit card, or at pink ticket vendors with the cavity for devices(IIRC the latter didn't work initially).
I think the reason some people are complaining about the Suica stuff nowadays is that since... I think 2021 there's been stock shortages so getting a physical Suica involves going to specific places (I think at airports for example?) to get one. There's also now this "Welcome Suica" that you can get but it only works in certain areas of the country (so much for the IC standard...)
I believe you can't get a physical one from the ticket machines anymore unless you are getting a commuter pass, but I might be wrong.
There was a brief period where it was difficult but that's gone now, you can set it up easily on Apple Wallet at least (apparently Google wallet is different?).
It used to be easy to get one from a 7-11, then it was hard for a bit, then it was easy again with digital wallets.
Yes, that was during the period where there was a chip shortage for things like cars and other industrial products, this also affected production of Suica cards at the time. During that period you couldn't buy unregistered Suica cards, but you could still buy registered cards (registered to your name). This was simply used as a mechanism to limit the number of cards because of the shortage, and you could also buy those "visitor" Suica cards (those I don't like, for various reasons).
I've been able to get multiple over the past nearly 10 years, very easily. I think there was a relatively brief shortage toward the end of the COVID closure, maybe the first year or so Japan was re-opened. But generally you could still get them, just not at major hubs.
We purchased it from a machine recently. By the way, can I just say: Japan cares about UI in a very different way to Europe. The screens had pleasant graphics and sound, and the buttons for pressing in numbers felt so good. It just felt like someone who cares designed that machine. I did not like the refill-your-IC-card machines though, they made very loud noises so you wouldn't forget to take your IC card with you.
Am in Japan now and can confirm: you got a broken one. It's magically fast, everywhere. I prefer it even at the 7-eleven. Why wait the interminable 2 seconds for your Visa 'cardo touchy' to work when Suica is literally instant.
Reading this article it makes sense why it feels too fast to be real, especially when using a powered phone. The things are already communicating as my hand is moving towards the reader. By the time it gets there, it's happened.
Pleasant alternative from a lot of US transit systems, eg BART int eh Bay Area which is the most customer-hostile service I'eve ever used. giant gates that seem right out of a dystopian science-fiction movie, an achingly slow card readers which absolutely force you to break stride no matter how ready you are. Add in the extremely unhelpful station attendants and you've got a recipe for a public transport service that people actively avoid if they possibly can. Then they turn around and ask for voters to approve extra tax money. I'm convinced none of the people on the BART board actually use the service.
There's a big difference in antisocial behaviour and visible mental health issues between Tokyo and San Francisco.
"San Francisco’s BART found that systemwide crime fell 41 percent after new gates were installed. Even more impressively, across the ten stations with the most corrective maintenance needs, staff time spent on in-system maintenance fell 96 percent, which suggests that fare evaders also cause most unreported crime, like littering, vandalism, and graffiti."
OMNY with iOS Express Mode is crazy fast. I don't even have to do anything besides hold my wrist or phone next to the entrance: https://support.apple.com/en-us/105123
Sad to see the mascot going in March. Apparently this entire brand reset is tied to something JR East is calling 'Suica Renaissance,' which is about a ten-year effort to turn Suica into a lifestyle brand.
They're planning on moving beyond the ¥20,000 prepaid balance limit, they are adding QR code payments (think WeChat and Alipay), making Suica work across regions and support more touchless and cloud-based systems, and connecting it more with banking, shopping, loyalty, discounts, and local services.
So essentially they want to become your default payment platform which is a huge opportunity given how paper-money-driven Japan is.
The penguin isn't owned by JR East, which is the problem. It's owned by a specific artist and licensed by Dentsu, who has to approve all usage. The other transit networks actually fully own their mascots, but Suica's Penguin isn't theirs to control.
The weirdest payment method has got to be the Coke ON vending machines that do not support SUICA but instead require you to QR code-IR blaster you to a website where you bluetooth pair with the vending machine then buy it on your mobile browser.
Like....somehow they turned a sub 1ms operation into a 4 minute 32 second one. It boggles the mind
Most Coke On machines do support Suica/Felica but you have to press IC on the blinking pad. The problem is that the pad doesn't seem like a touchscreen and it can be difficult to precisely tap. However Suntory does have app-only machines now.
It's not really mentioned in the article, but Suntory and transit operators out in Hiroshima etc. are turning away from Felica simply because the licensing fee is too high for them. That's also why Samsung and Google don't enable it on non-Japanese phones. Sony and JR missed the part where they have to generous first to eliminate all competition before jacking up fees, and now they're getting eaten by QR payment and Visa.
Coke ON Pay uses an app that automatically pairs with the machine when you open it [1]. It’s pretty quick and takes less than 30 seconds once you set it up.
I think you might be referring to QR de Kessai [2], which was introduced in 2023 and is targeted more at inbound international tourists who don’t want to download the app and may not have an E-Money card. Basically they aim to support to support the widest possible audience - at the cost of a slow/clumsy experience. These machines should also accept payment via the faster Coke ON app method and often have E-Money tap-to-pay options too.
From that perspective it kinda sorta makes sense. But yeah I wouldn’t bother with it unless I was dying of thirst and I had no cash or other payment options available.
30 seconds is the complete user flow to open the app, select a drink, approve payment with face id, and dispense the drink. Maybe a few seconds longer in the end than paying with Suica, but pretty negligible.
And a lot of coke machines in train stations, service areas, etc also accept Suica if you prefer (but then you don't get the stamps).
Typically the machines I see which only accept the Coke ON app are in more rural areas that traditionally would have only accepted cash. And I much prefer the app to cash.
Maybe it was advanced for the time being created, to me it's just any other RFID card that is issued everywhere else in the world in the matter of read speed, from every public transit card that I find in every EU country I've visited (maybe for a US citizen not used to public transit it seems something special, I don't know), to skipasses, to even your gym card.
Having the option to also pay with credit card would be much more convenient to tourists, when I visited Japan I've had difficulties finding the right place to get a SUICA card (being that my Android phone didn't have Felica chip, as most phones sold outside Japan), and on top of that you almost everywhere need to charge it with only cash. And you can charge it only by 500 or 1000 yen at the time (depending on the machine), and of course tickets always have not round prices like 110 yen. And you have 500 yen of deposit for a card that probably costs to them 10 yen to manufacturer, unless you get the red SUICA card that you can get only in some special machines at the airport but with that you don't get back the unused credit when you leave (you can spend it at vending machine tough).
So the speed saving of a couple of ms of not having to pay by tapping your normal credit card is completely vanished by wasting time to charge that card.
BTW even if they don't want to put credit card POS on every station (I get it, it's expensive and they need to pay fees if someone uses a card, compared to cash) they could make a system that uses regular NFC (would be 100ms slower, who cares) at least for tourists so they can use it with a regular NFC card in their phone wallet that they can charge with an app without requiring a technology that only works in phone sold in Japan?
There is a perhaps a trend of local payment means being less accessible to tourists. I haven't experienced it first hand but WeChat/Alipay are in the same boat as I understand, and PromptPay in Indonesia can be somewhat be used but needs preparation before making the trip.
Now, if you're not a tourist passing by for 3 days, Suica has most of your gripes solved and is an incredibly useful general payment mean. I use the Felica version on my phone (so no card), charge it with 3 taps in the app from my credit card, could have it auto charge if I really wanted to and is my payment choice wherever QR codes or QuickPay won't cut it.
BTW you can now use your credit card to ride JR trains.
> I've had difficulties finding the right place to get a SUICA card
It's not that hard unless you fly into somewhere other than Narita/Haneda where Welcome Suica cards are readily available. They're not available to Japanese residents, their only purpose is to function for tourists, so they're made to be easy for tourists.
> And you can charge it only by 500 or 1000 yen at the time (depending on the machine), and of course tickets always have not round prices like 110 yen.
Whatever I have leftover I spend at Starbucks at the airport on my way out. They'll happily split your purchase up so you can drain your Suica card balance and pay the remainder on credit.
Not sure about android, but first time I went to Japan I managed to install Suica app on my iPhone, that added Suica card to the wallet. So now I can pay with Suica and also top it up using apple pay. Only downside is that Suica app is all in Japanese, but there are guides online that explain what to press.
In Japan right now. I didn’t even have to install anything, just went to Apple Wallet, add card, selected Suica, and then could create and load up a card. Plus it gets set up as an express transit card so I can tap my locked phone to pay for transit or snacks (even when it’s dead). Super pleasant experience.
It's a bummer that while Google Wallet on Android phones supports Suica, they only offer the feature if the device was sold originally in Japan. Presumably they didn't want to pay Sony the licensing fees for the technology on non-JP devices.
iPhones have it worldwide, so a visitor to Japan can use Apple Pay to stand up a card and fund it.
Apple Watches also support it, which can make it even more convenient in some circumstances (no need to fish anything out of pockets/bags/etc, can be used while holding other things).
It's not just a patent fee, IC-card support takes special hardware that enables the low latency of the transaction. Only Android phones sold in Japan (including Pixels) get it installed at manufacturing.
All Pixels have the hardware, it's only activated on Japan-based skus. You can root and change the sku to the japanese model and it works. Allegedly the Pixel 11 is only the US sku and the international sku, so all international 11s should have it activated unless they do some serious shenanigans.
The only annoying thing is, well at least in 2023 or so, was that you had to actually load the card with funds even if you had a payment method attached on the iPhone wallet. That got me once as I was tapping like normal throughout my time in Japan and ran out of funds and held up a bunch of Japanese schoolgirls (judging by their attire) who definitely laughed at me and I of course laughed at myself too.
If you’re in Japan here is a tip though. If you’re not super close to the main cities and you’re in an area without as many tourists and you see a group of Japanese school children and they all are eating something - the same thing or stuff from the same place, copy them. You won’t be disappointed. Probably. Had the best curry pan or whatever it’s called in my life following that trick.
That also happens with Clipper Card in the Bay Area. Happened to me a couple of weeks ago on BART. I wonder if all transit cards need to be loaded with money when used on iPhone. I remember having a Clipper Card with autoload and that would work just fine without balance.
Yeah, I particularly like London’s implementation (I moved away just short of a decade ago - might have changed since) where if you just use the same card you don’t need a pass because there are daily/weekly/monthly maximums and you travel for free afterwards. Very good system. But it is slower that Suica/Pasmo.
iPhones still let you use certain contactless features (like Suica) even when the battery has "run out" (ie., the main OS has shut off). The reserve battery power is enough to run Suica, CarKey support, and FindMy.
Huge shout out that if you are going to be in Japan, you need one of these cards. I had thought I could just buy a two day pass in Tokyo. Which, you can, but you are almost certainly going to be limited to what routes and lines you can use, then. Which is brutal when you can't tell google maps which card you have.
Allows you to specify up front what passes you have, worked brilliantly on our honeymoon, especially when figuring out which Shinkansen reservations we needed to make.
As a rule, unless you have a very specific itinerary that involves a ton of travel within a single train company's network, passes in Japan are not worth it. This applies to both local subway passes and the sadly nerfed Japan Rail Pass for bullet trains. Even the Seishun 18 (unlimited travel for ¥2000/day, but local JR trains only) ain't what it used to be since they switched to requiring continuous days.
And there are several calculators online where you can punch in your itinerary and it will tell you the best pass to buy, if any.
On my last trip it only made sense to buy a pass for a single ~4 day segment that included two long Shinkansen rides plus an expensive sight-seeing bus.
yeah they still have the ticket stations next to the one to refill/buy IC cards. and thanks to the 20/21 Olympics in english now too(not 2 levels of menus deep like many of them used to be) so pretty easy to do
tbh if you only stay in Tokyo then the combined Tokyo subway pass (Tokyo Metro and Toei Subway) is the best all around deal, you don't need anything else. ¥2000 for 72 hours
I live in Tokyo and use my Suica almost every day.
Suica is very convenient because it makes entering station gates very smooth.
I have a question: how do people enter stations in cities outside of Japan?
I have never been outside of Japan, so I was curious.
In The Netherlands it is exactly the same, just from a different vendor and with different branding. Of course the "not invented here" mentality resulted in it being woefully insecure when it was introduced in 2014, and NFC tap-to-pay with credit/debit cards, smartphones, and wearables still isn't properly implemented.
They now made the decision to completely retire the current RFID solution, because the chip vendor discontinued the lineup it relies on. Its replacement proprietary card is based on NFC tap-to-pay, so on top of terrible product compatibility during the transition period we're also getting a nice extra tap-in delay out of it.
Many cities have their own cards, that are used for transit only (so no vending machines etc., and no interoperability between cities), increasingly many places just let you use your credit card in place of the special transit card, some places (Germany, some parts of Scandinavia) don’t have ticket gates at all.
I’ve visited Tokyo four times, and I’ve been using the same Suica card since my very first trip! I love it, and I’d really like to collect all the Suica-like cards, such as PASMO, ICOCA, Kitaca, and more.
When you pay with Suica, the merchant pays a transaction fee of between 2 to 3.2%, similar to a credit card.
That's surprising. IC cards are so universally and cheerfully accepted that I assumed they had no per-transaction costs. Compare the US, where merchants can be surly about card payments.
There's a mindset difference. People are more willing to pay to reduce inconvenience for customers there, whereas here the inconvenience to the merchant sometimes matters more.
This simply isn't true, or you'd see these places accept credit cards.
The most prevalent mom & pop approach is either cash only or it's cash and PayPay. You may also see cash, PayPay and IC. PayPay, at first, had extremely low fees and an army of sales people that targeted mom & pops, pushing the low fees. They've since then increased fees as their saturation has increased, and now you'll see shops adding things like setapay or hachipay (which are annoyingly ku specific payment methods that are very low fee).
Larger businesses are owned by massive conglomerates, or are housed in shopping complexes owned by massive conglomerates that require them to accept more payment methods.
Like all businesses, they aim to reduce their costs and increase their margins. They aren't adding payment methods to reduce your inconvenience, unless they think doing so will increase their volume enough to offset the fees.
When you tap your card on a terminal, it reads and rewrites the card locally in an instant, with the entire transaction processed in under 200 milliseconds.
It's depressing that some transport systems around the world delivered decades later couldn't match this (using a proprietary card not a credit card), looking at you Myki.
I was hoping the author would also discuss a bit more about the security / encryption side of it. If transactions are done only between the card and the reader, could one use a reader at home to alter the balance? If you can load the card on you phone I assume you can use the phone to read it, but that might not be true.
Anyway it was a great read! Glad to see somebody writing without (obvious) use of LLMs.
I’m in Japan right now on a holiday and I was blown away by how easy it was to get set up with Suica through Apple Wallet / Apple Pay. In fact, I did the initial set up back home in Toronto just by tapping a few buttons in the native Apple Wallet app. Took probably 30 seconds.
It is so convenient to use Express Transit Cards on iOS… I also just found out that there’s something similar for Presto cards in Toronto so I’m going to have to set that up too.
The combination of its speed and universal acceptance across Japan makes this by far the best system anywhere. Despite being decades old, it’s still better than “new” systems being rolled out elsewhere.
Want to buy a drink while waiting for your train? Just tap the same card. It’s magical and way faster than ApplePay or similar tech.
I am literally on a flight to Japan right now, and one of my main goals is to add a Suica card to my collection of transit cards from around the world (currently 31 cards large).
Sadly physical cards may only have a few years left, for the most part using tap-to-ride is superior. So I really have to get out there and grab them while I can.
A noble goal. Last I heard the best bet to gete a physical Suica card is to get the Welcome Suica. It is available at a few airports and a few large train stations:
An Indian curry restaurant in "my" local Aeon only accepts PayPay or cash and that's it, so you get all kinds. Other than that I've been able to use my Suica card in surprising places.
In the past I've purchased a rail pass because I figured it'd be more economical but last trip we just got a couple of IC cards and just booked our shinkansen and that was honestly the best experience. The problem with the rail pass was that it could only be used on some services, and the IC card was usable on most. The most confusing thing is just figuring out which local transport companies have a slightly different network, but it was honestly not bad.
I still have my Passmo card from my very first visit to Japan in 2008. I went back in 2018 and it still worked and had a balance. I used it as recently as 2025. Pretty cool!
It's a bit of a shame that the long-term "wow" factor has been somewhat negated by the new tourist cards that expire after four weeks ("Welcome Suica" and "Passmo Passport"). It looks like you can get the regular cards everywhere again if you want now, but when I visited in early 2024, there was a months-long shortage of regular cards going on,* so the airports only had those temporary cards available, meaning a whole lot of people came and left only ever getting a temporary one. (I went out of my way to get "real" permanent cards from a couple of other regions, although I regret not collecting more of them at some places I passed through.)
* I have no idea how a shortage of hardware would make it better to give out temporary, expiring cards than permanent cards, since I assume they use the same technology (and the temporary ones would cause more churn, if anything). But that was the story at the time.
The joys of single supplier most likely. Probably contracted to provide 1 mil a year or something then if tourism greater than that have the "disposable" ones... doesn't need to be any hardware difference though a simple time limited cards get activated with expiration date and server auto permanent inactivates them.
Could be because of some payment regulation. IIUC prepaid payment method in Japan has to maintain a large sum of deposit to cover cost of refunds in case of insolvency situation. Balances on expired cards probably aren't used for that deposit calculation.
Also IIRC, relationship between Sony and JRE had soured few years ago and the fab in Japan that manufactured Suica cards was shut down. The contract went to Panasonic, but looks like Panasonic then sold off the smartcard unit to Nuvoton, and likely some security/nationalistic issues around that was the cause of the card supply issue.
There are really subtle cues to tell the model number(smartcards have model numbers!) and manufacturer of cards, most simply in tiny dent created by the cavity to hold the chip. Sony ones were circular and current cards are racetrack shaped.
The best thing that you can add a Suica, PASMO, ICOCA, or TOICA card anytime to your Apple Wallet. You don't even have to be Japan. Just add transit pass and that's all, when you are there you can start using it instantly. But it works with a lot of cards all around the world (Hong Kong Octopus, Korea Tmoney, SF Clipper etc.) it's in the Wallet app itself.
Suica was excellent when I had the chance to use it. I used the Apple Pay version and it worked flawlessly. I think I do prefer what I'm seeing more and more in the US with a tap-to-pay so I don't have to learn a new system, but Suica was so universal that I really couldn't complain. Makes sense especially with the larger diversity of digital payment methods and cash prevalence in Japan.
Credit card tap-to-pay doesn't have to be slow. The transaction could be done asynchronously, and some payment schemes even explicitly classify transit transactions as impossible-to-fail and will ignore things like overdraft limits.
Similarly, it could also be implemented via a rolling payment hold loop. Unattended petrol stations do something similar: you first insert the card to authorize a hold (say $200), then fill up the car, then finalize the transaction - at which point your $50 bill is actually deducted and the hold on the remaining $150 is released. Transit could do the same, with only the very first transaction being slow, and each terminal containing a list of pre-authorized cards.
There are several types of QR code payments getting introduced, so it would be interesting to know the specifics. I'm only aware of using a QR code for Shinkansen tickets, which is something I have used and something a tourist can use as well. And then there's the new tickets slowly getting introduced in some areas, where the paper ticket has a QR code. I've not seen those yet, but it sounds like just an ordinary ticket otherwise.
I mean general QR code payments as opposed to QR codes on tickets. First noticed them at convenience stores, but vending machines have them too, and I think some restaurants.
Suica is incredible, I remember when I first visited Japan in the 2010’s I was amazed at the speed and ubiquity, now in America that tap to pay on transit terminals are becoming more ubiquitous I feel somewhat disappointed at the “lag” I feel compared to the suica transactions
Wait, the balance is stored on the card? I'm fairly sure the balance is shown in the JR app too, so presumably that cannot be the case. [Update: or maybe not? I opened the app now and it's asking me to enable NFC and hold it up to the card.]
Anyway I love my Suica. I got it a good decade or more ago, I have a few thousand yen on there, and it's always ready for me when I go back to Japan. Useful on the Metro, trains and in shops. Easy to top up at the plentiful, dedicated top up machines. I also loaded Shinkansen tickets on it last time and travelled "ticketless".
The original Dutch system used a very similar approach: the card not only stores the balance, but also a history of taps, and information about the travel products. Your travel history is available on a website, but new trips are only shown after a terminal has asynchronously uploaded your new data.
Fixed terminals (like at a train station) near-instantly upload it, movable terminals (like in a bus) have a bit of a delay and sometimes only upload when the bus arrives back at the depot. It is possible to add new travel products or balance from an app / website, but you have to visit a special "pick-up terminal" to update the card.
Yes, they do store the value. There was a blogpost posted to HN last year that discusses the cryptographic features of these cards [1,2]. It's amazing that these cards are almost solving the problem of secure digital money.
The card definitely stores the balance. They probably sync the transaction records to their servers, but during the transaction the value on the card is presumed to be the truth AFAICT.
Remember when the system was designed in the early 2000s the Internet was much less available and reliable, and when so many transactions happen every day, you don't want to get thousands of passengers stuck inside a metro station only because some Wifi router was down.
This is basically a limitation of the CAP theorem, in these situations there's really no choice but to sacrifice "consistency" and settle for eventual consistency.
I think even credit card payments for transit also make that sacrifice. I had a weird experience using a Visa card to pay for a tram ride because they were promoting it and had a discount. The machine indicated success and let me through, but since I rarely used the card, somehow the payment didn't go through afterwards (the credit card was in a very weird state). If they insisted that all the payment transactions complete successfully for a transit payment, it would be too inconvenient and unreliable to use.
Credit card payments have an "offline" mode for the same reason - before ubiquitous broadband, a shop may have to dial-up to the bank to verify a card, which is slow. Debit cards that run on the credit networks can have that enabled or disabled depending on trust.
Remember originally credit card payments worked by putting the card under a slip of carbon-copy paper and rubbing off the raised digits. All the digital stuff ontop of that was just for efficiency.
Coming from NYC and being used to swiping once to pay a flat fair, my first Suica lesson was they vary the fair by the distance traveled. This means you have to tap in AND out of buses and subways. It was a bit embarrassing and frustrating when I almost could not board a bus in Sapporo with my friends after they all tapped in and my card was rejected. WTF? Thankfully the bus driver showed me a sign in English telling me I forgot to tap out of a station or bus. Oh. He let me board the bus with my friends. Found a train station and the woman at the counter began holding up a series of English signs so we could figure out where I forgot to tap out to ensure the correct charge is applied then sent me on my way. Turns out I goofed up transferring between the Tokyo subway and Shinkansen where I didn't tap out of the subway, got stuck, and a frustrated transit worker just opened the gate to let my dumb tourist ass through meaning I didn't tap out of the subway.
I was floored when I found out you could pay for stuff with my "Japanese MetroCard." It's quite a wonderful system.
It also allows for easy in-transit checking: anyone on the "secure" side of the fare gates must be in possession of a card whose last transaction was a tap-in. There's no chance of a cheeky "it wasn't me who jumped the turnstyles - it was my lookalike", and you can have roaming groups of ticket validators who board random carriages and check everyone.
The FeliCa NFC standard made its way into more than just transit cards in Japan. One notable user is the Amusement IC network, which lets you quickly log into arcade games across multiple manufacturers using a single card. Some implementations (Konami's e-amusement most notably) even go as far as to allow any FeliCa-compatible card or device to be linked to a profile, including transit cards, phones (with no app required!) and certain models of Sony Bluetooth earbuds which use FeliCa for quick pairing.
There also seems to be some state logic as well. The card knows when I’m in the middle of a trip and doesn’t update the balance until a future tap when it can determine the extent of the trip (presumably). Very cool that it’s all done locally.
For me, other than the speed and convenience, I was amazed that I could use my same Suica card (on my iPhone) in Tokyo, Kyoto, Osaka, and Fukuoka. Even though each region has their own card, they have mutual use in most areas.
Agree! Just a heads up for folks that you’ll likely want to download the Welcome Suica app which is aimed at tourists.
The regular Suica app is separate and is not English-friendly (this may be worth it for you only if you’re staying long term, ok with the language barrier, and want a card that doesn’t expire).
> When you tap your card on a terminal, it reads and rewrites the card locally in an instant, with the entire transaction processed in under 200 milliseconds. For each tap, the card and terminal mutually authenticate each other and generate a fresh encryption key to prevent spoofing.
This is the part that I'd be interested in reading more about. I'd known there must be some data on the card itself (since I can still use smartphone apps to read my cards now that I'm back in the US), but assumed there must have been some server connection too since storing anything authoritative on the card would invite tampering, and wondered why they would've bothered to store a log of recent trips on the card itself in addition to the hypothetical servers. It does make sense for latency reasons that they'd design it for the card itself to be authoritative, but I wonder how they do prevent tampering.
It's largely the same as credit cards - the card have multiple data partitions and secure read/write are encrypted. Balances are logged on both the card and the station-level servers and correctable errors and/or mid-ride updates, if any, are propagated while the user is in motion, so that they can be written upon exit.
^ that was the official explanation for a long time, but they've reportedly transitioned to more credit-card like online system with no station-level servers, and also raised fees, which was negatively received by many rail operators aside JR East itself(which owns the system). There had been few rail companies experimenting with NFC credit card rides, though I'm personally suspecting it's more of bargaining power development.open threat than those lines seriously considering a switch.
The chips in the cards are secure enough that physical tampering is extremely difficult and software tampering is difficult enough with security by obscurity + encryption - the catch is that, it turns out, early Suica cards used DES(not even 3DES it seems), and they just didn't tell anybody until those went out of circulation. Plus, the prepaid limit of 20k yen(local equivalent of $200) limits abuse potential of the system; it's not worth trying to commit blatant frauds on the train-and-sandwiches card.
> Plus, the prepaid limit of 20k yen(local equivalent of $200) limits abuse potential of the system; it's not worth trying to commit blatant frauds on the train-and-sandwiches card.
I don't think a limit on the value stored on the card limits the potential of fraud. I'm not imagining someone would load tens of thousands of yen onto their card. I'm more imagining someone setting the card to have enough money to get through the gate, every time they want to use the train. I'd agree fare is cheap enough that it's probably not worth someone's time to figure that out, but it would add up over time if someone did it (and especially if the method for doing so got passed around).
I also understand that there's two-way communication with one-time/expiring keys that would prevent a simple replay attack from working. Really just interested in understanding the entire mechanism in more detail! It gets handwaved as just "encryption" in a lot of discussions, probably due to a combination of intentional obscurity (like you mentioned) and it just not being super interesting or relevant to most contexts.
(Also, good point that the servers would still allow significant deviations to be caught and the card rejected/flagged in the system-- I've also seen that concept mentioned elsewhere after trying to research it a bit more.)
I remember the stored-value transit cards in Sweden in the 90's/00's. They were just magstripe cards with the value on it and a basic checksum value. It was not hard to figure out how to rewrite the card with a higher value, or just clone it, value and all, onto a separate card. No online component, as mobile networks weren't great when the system was designed.
They'd download their transaction logs out of the buses every night and do a reconciliation. If they found a card where the value went up or had impossible travel times, they'd look at the travel routes/dates and wait around on the "hackers" commute route with a police officer until they showed up. Very manual.
>Every Suica card has a chip storing two things: a unique card ID, and your current balance.
This is not true. It also stores some history on where you have last entered so it can do things like transfers or block you from exiting an area that you never entered.
> The cards have no battery and aren’t self-powered in any way. Instead, the reader on the gate emits an electromagnetic field that powers the card just long enough to complete the transaction.
This is how all passive RFID works. It's pretty cool. There's even systems that are both passive and active. For example, as a Disney adult, I'm familiar with their magic bands which do have a battery but also work passively. For tying ride photos automatically to you the battery matters because you're either moving too fast or are too far from the camera for passive to be consistently effective. But for simply using it as payment or a ticket you're pressing the device up against a reader and no matter how old the battery is it'll continue working.
At a first glance passive RFID would be a perfect match for ride photos, the whole mechanism is ridiculously fast so speed of the ride would not matter much (the technology works at highway speeds just fine) and can work over ~15 meters.
But there are two somewhat significant issues with the radio layer in this application: the geometry of tag antenna is somewhat critical (making it into a band would be problematic) and the back scatter is attenuated by salt water blobs (ie. people) almost perfectly.
> The cards have no battery and aren’t self-powered in any way. Instead, the reader on the gate emits an electromagnetic field that powers the card just long enough to complete the transaction.
Brillant!
AT&T showed this in television commercials back in the 1980's.
"Can you go through a toll booth without stopping? You will. And the company that will bring it to you is AT&T."
If you haven’t experienced suica, it’s like magically fast. Faster than NFC, faster than Apple Pay, faster than tap to pay, faster than Disney magic bands, faster than your work badge. It absolutely floored me every time I used it in Japan and it’s a full payment transaction.
It's not only magically fast, but it's super useful. You can use it at vending machines + convenience stores anywhere (unless it's one of those old ones that only take cash/coins and print paper tickets) and at the shops as well.
People not in Japan/Singapore/Korea/China should experience what a proper transit card done looks like.
I've used a Suica card for many years now. I agree it's both fast and reliable. One summer I was crisscrossing Tokyo by train over several days, using the Suica card, so I got to see a LOT of commuters. Lots of people were in a hurry and would run through the gates (the default state is open, it closes quickly if your card is out of funds or some other problem). Running through the gates while quickly touching the card to the reader. I've done that a couple of times myself.
It's also useful in that you can pre-order a Shinkansen ticket, for example, and link that purchase to your Suica card, which you then use for the Shinkansen gate. If there are other fees (which there may be) they're just deducted from the money the card holds, as usual. Makes everything very simple.
For me a physical card is easier than using a phone. A phone is so much larger so I would need to get it from a pocket somewhere, while the Suica card I can keep in my jeans pocket or some other easy place.
It was funny during Expo in Osaka on the massive metro station - you could just zip in with the suica, while the less knowledgeable foreign tourists would form long queues in front of the special gates where they could pay by a payment card, which were glacialy slow in comparison.
I also did prefer my plastic Pasmo (essentially the same as suica) card until I learned during my last trip, that it can only be recharged with cash :-/
This doesn't especially bother me, but it is a kinda funny workflow to go to an ATM to withdraw cash (with your bank card) only to immediately put it back into the machine (to charge your IC card).
> People not in Japan/Singapore/Korea/China should experience what a proper transit card done looks like.
In Prague city transit does not have limiting gates. If you bought unlimited ticket, you just walk in bus/tram/metro and that is it. No touching, scanning, showing, nothing. Maybe once a month (or even rarer) you might encounter a patrolling controller who would ask you to show your ticket, but that's it.
Same in Berlin. I think the reasoning is that it'd cost more money to fit ticket gates compared to loss of revenue from fare evaders.
Makes for such a smooth journey as most people are doing the right thing.
I much prefer convenient over fast, being able to just tap my phone's uploaded IC card/alipay without having to open it up or switch cards is maybe 200ms slower, but I don't have to think or change what I'm doing. Plus with alipay it will just autodeduct so I don't ever have to think about that as well, though Apple wallet Suica makes it easy to reload too.
JRE required Suica to be instantly accessible so there's a setting in Apple Wallet to set a card to a default quick transit use card(forgot the exact name). If configured as such, just poking the gate antenna with earpiece end of an iPhone instantly completes the transaction just as fast as a real card does.
(yes, the antenna is in the top FaceID/Dynamic Island area, Osaifu Keitai spec requires a □つ icon wherever antenna is located, which Apple managed to completely ignore)
a setting in Apple Wallet to set a card to a default quick transit use card
Because it's not the easiest setting to find: Settings/Wallet & Apple Pay/Express Transit Card
The Wallet app prompts you to set this up when you initially add the transit card too, IIRC.
FWIW on Android, Google Wallet tells me "Transit Cards: These cards never require verification", and indeed I can just wave my phone at the terminal without unlocking it.
And here I was all this time double pressing power button to open wallet like a fool. The more you know.
Is this different to Express Mode, which has been a thing for years for all kinds of cards (including car keys)?
Express Mode originally launched as Express Transit with only support for Suica, Beijing and Shanghai cards. It was then renamed to Express Mode when support for the other modes was added.
This is a consequence of the world being eaten by managed code. IBM made POS checkout terminals that were blazingly fast 40 years ago. Now every modern data processing technogy is glacial by comparison.
The story makes clear that constraints matter. Product teams build against specified constraints. If latency isn’t one of them, they’re going to sacrifice it if it helps meet the defined requirements more quickly and cost-effectively.
Every time I see a shoddy piece of work, I know which constraint was sacrificed.
Alipay in China for transit and pay is also easy. No card, just a QR on your phone. It can even be a screenshot of the QR code.
QRs will always be so much more cumbersome than blindly tapping a card or your phone.
But you should probably just get a suica in your apple or google wallet, you don’t actually need an IC card. I’m not sure if using a phone makes it less fast though, I couldn’t tell (we had to get a card for my kid since he doesn’t have a phone).
Definitely better than the QR codes used by China.
You can use a digital Suica in Google Wallet only if your Android phone has Japan-spec hardware . International Android phones bought outside Japan generally cannot support digital Suica cards in Google Wallet.
Pixel phones bought outside Japan supposedly can if you do a little adb hacking to enable it, but I don't have a Pixel to try it myself.
Pixel phones outside of Japan are missing the Felica chip.
Apple pays the fee for all phones in the world to have the chip. Google only pays for Japan devices.
As far as I could tell from everything I've read from multiple sources, every Pixel since Pixel 4 _has_ the chip, it's just not enabled and you can enable it with rooting.
https://xdaforums.com/t/global-pixel-device-unlock-felica-su...
The chip is not missing, the configuration is.
I assume it's a licensing issue, where Google is too cheap to pay JR for the phones sold outside of Japan, so only setup the JP models and only pay the license for those.
All iPhones can.
You can move your alipay card into apple wallet and have it as the default payment method, so do you don't even have to swipe or turn on your phone, it will even work in low-power/off mode.
It doesn't make it less fast! The same model is implemented on the mobile side, which uses the same technology.
It’s sooooo convenient to buy Shinkansen tickets digitally too with it all linked.
It appears to be based on NFC-F with latency under 200 ms, called FeliCa. Similar to regular NFC at around 300 ms latency plus any network times.
https://www.sony.co.jp/en/Products/felica/NFC
It was a completely custom standard conceived by JNR/JRE and Sony during 1990s-2000s, that they eventually managed to be included into the common NFC specification through years of lobbying and pressuring.
It has really surprised me a few times.
It reminds me of that oft touted experiment where a light lit up within some number of milliseconds of a person hitting a button, and people perceive it as happening before they hit the button.
Same deal with Opal in Sydney - the old school opal card processes a second or so faster than a card/apple pay/google pay that you can just keep walking. Smashed into the barrier the one time I forgot my card.
Something that is amazing about Sydney’s system though is that as a visitor to Sydney you can likely use the train system without needing an app or any sign up. Just use your credit or debit card via nfc on your phone (or the physical one)
I was honestly so impressed by that, you mean I can just tap on? Don’t need to stand here outside the gates for 10 minutes entering my info into a frustrating app? Don’t need to buy a $10 card, only $5 of which I’ll ever use? Even with suica being pretty easy to set up on iPhone, this is definitely something Sydney’s got over Japan’s system.
Yep, and it's increasingly common around the world. In Australia, it's also fully rolled out in Brisbane and I believe it's just about finished being rolled out in Melbourne too.
It's now rolled out in Perth too, I think.
Ah that’s great news, I’m from Perth but currently living abroad.
I’ve never noticed any delay on the London underground with Apple Pay or a normally debit card - certainly not a second. Havent used an oyster for years but I don’t remember it being faster.
Definitely slower to use a card or your phone in London.
I remember when they first allowed card use more than a decade ago and it broke the flow quite a bit at rush hour as people were so used to the Oyster card's timing that they'd run into the back of people using cards or people using cards would run into the gate as it had not opened as quickly as they were used to. Quite a bit of commentary around it during that time:
https://www.reddit.com/r/london/comments/2zc104/that_extra_s...
Maybe I am just plainly wrong or encountered some specific stations, but this does not feel true from my experience.
During my last visit to London (in 2025), it felt noticeably slower than even NYC subway tap-to-pay.
Suica is a whole other beast that isn't even in the same category of speed. It genuinely feels sub-200ms instantaneous.
Correct, Suica is faster than Oyster (card), which is faster than paying with bank cards or phones in London.
(I haven't used the NYC system.)
The card might be fast but getting one as a tourist is kind of a hassle
I heard from friends that physical Suica cards tend to be difficult to obtain these days at times, but digital one isn't at all.
Took me roughly a minute to create one within Apple Wallet ahead of my trip, and that was it. Didn't need to install any apps or register on any websites, because creating a Suica card is natively supported in the wallet app.
Idk how the situation is like with Suica card on Android though, outside of the fact that unless the phone was purchased in Japan, it will typically lack the necessary hardware for it (which isn't a concern with iPhones, because all regional versions include it).
Well you can get it only in some kind of machines, and you need to pay it cash. Also you need to use cash to charge it, and you can charge it minimum by 1000 or 500 yen at a time depending on the station, not less.
The digital version only works on iPhones, since Android phones sold outside Japan doesn't have the Felica chip, or if they have it (e.g. Google Pixel) is disabled in EU/US firmware because the manufacturer doesn't want to pay a fee for every phone to Sony for something 99.999% of people that will never travel to Japan would use.
I noticed that. I could have sworn I got one with a credit card, but can't refill it.
Maybe you can refill it with cash? Or did I have to buy it with cash? and when you leave everything expires.
It's completely anonymous and available on many ticket machines. There are some half-wrong info that you have to fill in a form, but that's only for commuter passes and registered cards.
You just tap Buy Suica and insert two 1000 yen bills. The system keeps 500 yen as a deposit, which is refunded when you return the card, but it's also $3.50 for a little memorabilia.
If you absolutely don't want the keepsake, you can create a virtual card from Wallet on iPhone(7 or later). I believe an app is not needed through that path. Those can be loaded from your credit card, or at pink ticket vendors with the cavity for devices(IIRC the latter didn't work initially).
I think the reason some people are complaining about the Suica stuff nowadays is that since... I think 2021 there's been stock shortages so getting a physical Suica involves going to specific places (I think at airports for example?) to get one. There's also now this "Welcome Suica" that you can get but it only works in certain areas of the country (so much for the IC standard...)
I believe you can't get a physical one from the ticket machines anymore unless you are getting a commuter pass, but I might be wrong.
There was a brief period where it was difficult but that's gone now, you can set it up easily on Apple Wallet at least (apparently Google wallet is different?).
It used to be easy to get one from a 7-11, then it was hard for a bit, then it was easy again with digital wallets.
Yes, that was during the period where there was a chip shortage for things like cars and other industrial products, this also affected production of Suica cards at the time. During that period you couldn't buy unregistered Suica cards, but you could still buy registered cards (registered to your name). This was simply used as a mechanism to limit the number of cards because of the shortage, and you could also buy those "visitor" Suica cards (those I don't like, for various reasons).
Anyway, that problem is long gone.
I've been able to get multiple over the past nearly 10 years, very easily. I think there was a relatively brief shortage toward the end of the COVID closure, maybe the first year or so Japan was re-opened. But generally you could still get them, just not at major hubs.
Is it?
https://www.jreast.co.jp/en/multi/welcomesuica/welcomesuica....
On iPhone it’s insanely easy to you just request right from the wallet app and you can even reload it there.
Super easy via your Apple wallet
Recently the physical cards are sold at a machine inside Haneda airport.
I bought one from a machine easily at a train station. It spits the card out for you.
No, just download the Suica app and top it up with Apple pay.
Really? In 2009 I just bought one at a vending machine, but I haven't really explored Japan since then
We purchased it from a machine recently. By the way, can I just say: Japan cares about UI in a very different way to Europe. The screens had pleasant graphics and sound, and the buttons for pressing in numbers felt so good. It just felt like someone who cares designed that machine. I did not like the refill-your-IC-card machines though, they made very loud noises so you wouldn't forget to take your IC card with you.
The best part is if you press the help button a real person pops out of the machine in a few seconds.
That was not my experience in Japan; I found that it still took a second to go through every time, just like in New York/etc.
Am in Japan now and can confirm: you got a broken one. It's magically fast, everywhere. I prefer it even at the 7-eleven. Why wait the interminable 2 seconds for your Visa 'cardo touchy' to work when Suica is literally instant.
Reading this article it makes sense why it feels too fast to be real, especially when using a powered phone. The things are already communicating as my hand is moving towards the reader. By the time it gets there, it's happened.
Stunningly good.
Pleasant alternative from a lot of US transit systems, eg BART int eh Bay Area which is the most customer-hostile service I'eve ever used. giant gates that seem right out of a dystopian science-fiction movie, an achingly slow card readers which absolutely force you to break stride no matter how ready you are. Add in the extremely unhelpful station attendants and you've got a recipe for a public transport service that people actively avoid if they possibly can. Then they turn around and ask for voters to approve extra tax money. I'm convinced none of the people on the BART board actually use the service.
> ... giant gates ...
There's a big difference in antisocial behaviour and visible mental health issues between Tokyo and San Francisco.
"San Francisco’s BART found that systemwide crime fell 41 percent after new gates were installed. Even more impressively, across the ten stations with the most corrective maintenance needs, staff time spent on in-system maintenance fell 96 percent, which suggests that fare evaders also cause most unreported crime, like littering, vandalism, and graffiti."
https://www.city-journal.org/article/transit-crime-fare-gate...
+1 you can walk through the subway turnstile and not slow down.
Anything is faster than NY turnstile lol.
In NY, sometime i have to double pay because the card that worked on bus doesn't work on subway...
OMNY with iOS Express Mode is crazy fast. I don't even have to do anything besides hold my wrist or phone next to the entrance: https://support.apple.com/en-us/105123
I don't often do transfers, though.
Sad to see the mascot going in March. Apparently this entire brand reset is tied to something JR East is calling 'Suica Renaissance,' which is about a ten-year effort to turn Suica into a lifestyle brand.
Whitepaper: https://www.jreast.co.jp/e/press/2024/pdf/20241210.pdf
They're planning on moving beyond the ¥20,000 prepaid balance limit, they are adding QR code payments (think WeChat and Alipay), making Suica work across regions and support more touchless and cloud-based systems, and connecting it more with banking, shopping, loyalty, discounts, and local services.
So essentially they want to become your default payment platform which is a huge opportunity given how paper-money-driven Japan is.
The penguin isn't owned by JR East, which is the problem. It's owned by a specific artist and licensed by Dentsu, who has to approve all usage. The other transit networks actually fully own their mascots, but Suica's Penguin isn't theirs to control.
The weirdest payment method has got to be the Coke ON vending machines that do not support SUICA but instead require you to QR code-IR blaster you to a website where you bluetooth pair with the vending machine then buy it on your mobile browser.
Like....somehow they turned a sub 1ms operation into a 4 minute 32 second one. It boggles the mind
Most Coke On machines do support Suica/Felica but you have to press IC on the blinking pad. The problem is that the pad doesn't seem like a touchscreen and it can be difficult to precisely tap. However Suntory does have app-only machines now.
It's not really mentioned in the article, but Suntory and transit operators out in Hiroshima etc. are turning away from Felica simply because the licensing fee is too high for them. That's also why Samsung and Google don't enable it on non-Japanese phones. Sony and JR missed the part where they have to generous first to eliminate all competition before jacking up fees, and now they're getting eaten by QR payment and Visa.
Coke ON Pay uses an app that automatically pairs with the machine when you open it [1]. It’s pretty quick and takes less than 30 seconds once you set it up.
I think you might be referring to QR de Kessai [2], which was introduced in 2023 and is targeted more at inbound international tourists who don’t want to download the app and may not have an E-Money card. Basically they aim to support to support the widest possible audience - at the cost of a slow/clumsy experience. These machines should also accept payment via the faster Coke ON app method and often have E-Money tap-to-pay options too.
From that perspective it kinda sorta makes sense. But yeah I wouldn’t bother with it unless I was dying of thirst and I had no cash or other payment options available.
[1] https://szabo.jp/2021/05/16/coke-on/
[2] https://en.ccbji.co.jp/business/installation/qr-de-kessai/
So they turned a couple of millisecond operation to a 30 second operation?
30 seconds is the complete user flow to open the app, select a drink, approve payment with face id, and dispense the drink. Maybe a few seconds longer in the end than paying with Suica, but pretty negligible.
And a lot of coke machines in train stations, service areas, etc also accept Suica if you prefer (but then you don't get the stamps).
Typically the machines I see which only accept the Coke ON app are in more rural areas that traditionally would have only accepted cash. And I much prefer the app to cash.
Nooo the penguin is the best part of suica!
No Location based services please :(
They're a bit late to the party. It's still no China, but Japan has taken up digital payments big time post COVID and PayPay now has the lion's share.
Maybe it was advanced for the time being created, to me it's just any other RFID card that is issued everywhere else in the world in the matter of read speed, from every public transit card that I find in every EU country I've visited (maybe for a US citizen not used to public transit it seems something special, I don't know), to skipasses, to even your gym card.
Having the option to also pay with credit card would be much more convenient to tourists, when I visited Japan I've had difficulties finding the right place to get a SUICA card (being that my Android phone didn't have Felica chip, as most phones sold outside Japan), and on top of that you almost everywhere need to charge it with only cash. And you can charge it only by 500 or 1000 yen at the time (depending on the machine), and of course tickets always have not round prices like 110 yen. And you have 500 yen of deposit for a card that probably costs to them 10 yen to manufacturer, unless you get the red SUICA card that you can get only in some special machines at the airport but with that you don't get back the unused credit when you leave (you can spend it at vending machine tough).
So the speed saving of a couple of ms of not having to pay by tapping your normal credit card is completely vanished by wasting time to charge that card.
BTW even if they don't want to put credit card POS on every station (I get it, it's expensive and they need to pay fees if someone uses a card, compared to cash) they could make a system that uses regular NFC (would be 100ms slower, who cares) at least for tourists so they can use it with a regular NFC card in their phone wallet that they can charge with an app without requiring a technology that only works in phone sold in Japan?
There is a perhaps a trend of local payment means being less accessible to tourists. I haven't experienced it first hand but WeChat/Alipay are in the same boat as I understand, and PromptPay in Indonesia can be somewhat be used but needs preparation before making the trip.
Now, if you're not a tourist passing by for 3 days, Suica has most of your gripes solved and is an incredibly useful general payment mean. I use the Felica version on my phone (so no card), charge it with 3 taps in the app from my credit card, could have it auto charge if I really wanted to and is my payment choice wherever QR codes or QuickPay won't cut it.
BTW you can now use your credit card to ride JR trains.
> I've had difficulties finding the right place to get a SUICA card
It's not that hard unless you fly into somewhere other than Narita/Haneda where Welcome Suica cards are readily available. They're not available to Japanese residents, their only purpose is to function for tourists, so they're made to be easy for tourists.
> And you can charge it only by 500 or 1000 yen at the time (depending on the machine), and of course tickets always have not round prices like 110 yen.
Whatever I have leftover I spend at Starbucks at the airport on my way out. They'll happily split your purchase up so you can drain your Suica card balance and pay the remainder on credit.
Not sure about android, but first time I went to Japan I managed to install Suica app on my iPhone, that added Suica card to the wallet. So now I can pay with Suica and also top it up using apple pay. Only downside is that Suica app is all in Japanese, but there are guides online that explain what to press.
In Japan right now. I didn’t even have to install anything, just went to Apple Wallet, add card, selected Suica, and then could create and load up a card. Plus it gets set up as an express transit card so I can tap my locked phone to pay for transit or snacks (even when it’s dead). Super pleasant experience.
Just checked my phone, and yea there is an option to do it via Wallet, even easier. I’ll show this to my colleagues if I go there again someday.
Some googling revealed that apparently all iphones starting from version 8 support nfc-f/felica.
> would be 100ms slower, who cares
It's almost like you didn't read the article.
It's a bummer that while Google Wallet on Android phones supports Suica, they only offer the feature if the device was sold originally in Japan. Presumably they didn't want to pay Sony the licensing fees for the technology on non-JP devices.
iPhones have it worldwide, so a visitor to Japan can use Apple Pay to stand up a card and fund it.
Apple Watches also support it, which can make it even more convenient in some circumstances (no need to fish anything out of pockets/bags/etc, can be used while holding other things).
Only if you’re left handed, or wear your watch on your right hand for whatever reason.
Or you have a contortionist spirit in you, whatever works :)
I'm right handed and wear my watch on my left wrist, never had an issue.
I've tried it once and found it very inconvenient, compared to pulling out my phone out of my pocket, but glad to hear it works for you!
It's not just a patent fee, IC-card support takes special hardware that enables the low latency of the transaction. Only Android phones sold in Japan (including Pixels) get it installed at manufacturing.
All Pixels have the hardware, it's only activated on Japan-based skus. You can root and change the sku to the japanese model and it works. Allegedly the Pixel 11 is only the US sku and the international sku, so all international 11s should have it activated unless they do some serious shenanigans.
The only annoying thing is, well at least in 2023 or so, was that you had to actually load the card with funds even if you had a payment method attached on the iPhone wallet. That got me once as I was tapping like normal throughout my time in Japan and ran out of funds and held up a bunch of Japanese schoolgirls (judging by their attire) who definitely laughed at me and I of course laughed at myself too.
If you’re in Japan here is a tip though. If you’re not super close to the main cities and you’re in an area without as many tourists and you see a group of Japanese school children and they all are eating something - the same thing or stuff from the same place, copy them. You won’t be disappointed. Probably. Had the best curry pan or whatever it’s called in my life following that trick.
That also happens with Clipper Card in the Bay Area. Happened to me a couple of weeks ago on BART. I wonder if all transit cards need to be loaded with money when used on iPhone. I remember having a Clipper Card with autoload and that would work just fine without balance.
You might be right. I like how NYC is set up with just tap to pay with your wallet app without needing to unlock or anything.
Yeah, I particularly like London’s implementation (I moved away just short of a decade ago - might have changed since) where if you just use the same card you don’t need a pass because there are daily/weekly/monthly maximums and you travel for free afterwards. Very good system. But it is slower that Suica/Pasmo.
Cringe. Cards are fun, collectable, and never run out of battery. Mine is a custom limited edition card from a Japanese chocolate factory.
https://matcha-jp.com/en/9482
Suica cards (and transit express payments in other regions) work after iPhone batteries die for a few hours.
Are you saying that an iphone can be used as a Suica card even with a dead battery? Or just that a discrete card still works when your phone is dead?
iPhones still let you use certain contactless features (like Suica) even when the battery has "run out" (ie., the main OS has shut off). The reserve battery power is enough to run Suica, CarKey support, and FindMy.
Huge shout out that if you are going to be in Japan, you need one of these cards. I had thought I could just buy a two day pass in Tokyo. Which, you can, but you are almost certainly going to be limited to what routes and lines you can use, then. Which is brutal when you can't tell google maps which card you have.
https://japantravel.navitime.com/en/
Allows you to specify up front what passes you have, worked brilliantly on our honeymoon, especially when figuring out which Shinkansen reservations we needed to make.
As a rule, unless you have a very specific itinerary that involves a ton of travel within a single train company's network, passes in Japan are not worth it. This applies to both local subway passes and the sadly nerfed Japan Rail Pass for bullet trains. Even the Seishun 18 (unlimited travel for ¥2000/day, but local JR trains only) ain't what it used to be since they switched to requiring continuous days.
And there are several calculators online where you can punch in your itinerary and it will tell you the best pass to buy, if any.
On my last trip it only made sense to buy a pass for a single ~4 day segment that included two long Shinkansen rides plus an expensive sight-seeing bus.
What happened to buying a single ticket at the station, when you need one? That's what I did when I was in Tokyo, but it was a long time ago
If you're doing any transfers it could get reasonably complicated. SUICA makes those easy, unless you need a recharge to top it up.
They're still available, but the card is more convenient(phones even more so). Tickets are also now priced slightly higher than card rides.
You can do that, but the card is far more convenient and journeys are cheaper too.
yeah they still have the ticket stations next to the one to refill/buy IC cards. and thanks to the 20/21 Olympics in english now too(not 2 levels of menus deep like many of them used to be) so pretty easy to do
tbh if you only stay in Tokyo then the combined Tokyo subway pass (Tokyo Metro and Toei Subway) is the best all around deal, you don't need anything else. ¥2000 for 72 hours
Hard disagree. It doesn't cover JR lines, and with subway fares starting from ¥160 a pop, that's a lot of riding.
I live in Tokyo and use my Suica almost every day. Suica is very convenient because it makes entering station gates very smooth. I have a question: how do people enter stations in cities outside of Japan? I have never been outside of Japan, so I was curious.
In The Netherlands it is exactly the same, just from a different vendor and with different branding. Of course the "not invented here" mentality resulted in it being woefully insecure when it was introduced in 2014, and NFC tap-to-pay with credit/debit cards, smartphones, and wearables still isn't properly implemented.
They now made the decision to completely retire the current RFID solution, because the chip vendor discontinued the lineup it relies on. Its replacement proprietary card is based on NFC tap-to-pay, so on top of terrible product compatibility during the transition period we're also getting a nice extra tap-in delay out of it.
Depends on where.
Many cities have their own cards, that are used for transit only (so no vending machines etc., and no interoperability between cities), increasingly many places just let you use your credit card in place of the special transit card, some places (Germany, some parts of Scandinavia) don’t have ticket gates at all.
I’ve visited Tokyo four times, and I’ve been using the same Suica card since my very first trip! I love it, and I’d really like to collect all the Suica-like cards, such as PASMO, ICOCA, Kitaca, and more.
I love it when little everyday things bring a tiny bit of happiness and color into daily life. (for more info: https://www.japan-guide.com/e/e2359_003.html)
When you pay with Suica, the merchant pays a transaction fee of between 2 to 3.2%, similar to a credit card.
That's surprising. IC cards are so universally and cheerfully accepted that I assumed they had no per-transaction costs. Compare the US, where merchants can be surly about card payments.
There's a mindset difference. People are more willing to pay to reduce inconvenience for customers there, whereas here the inconvenience to the merchant sometimes matters more.
This simply isn't true, or you'd see these places accept credit cards.
The most prevalent mom & pop approach is either cash only or it's cash and PayPay. You may also see cash, PayPay and IC. PayPay, at first, had extremely low fees and an army of sales people that targeted mom & pops, pushing the low fees. They've since then increased fees as their saturation has increased, and now you'll see shops adding things like setapay or hachipay (which are annoyingly ku specific payment methods that are very low fee).
Larger businesses are owned by massive conglomerates, or are housed in shopping complexes owned by massive conglomerates that require them to accept more payment methods.
Like all businesses, they aim to reduce their costs and increase their margins. They aren't adding payment methods to reduce your inconvenience, unless they think doing so will increase their volume enough to offset the fees.
> Compare the US, where merchants can be surly about card payments.
I rarely encounter this - I find it far more common to see places that won’t accept cash at all (even small businesses like food trucks).
When you tap your card on a terminal, it reads and rewrites the card locally in an instant, with the entire transaction processed in under 200 milliseconds.
It's depressing that some transport systems around the world delivered decades later couldn't match this (using a proprietary card not a credit card), looking at you Myki.
I was hoping the author would also discuss a bit more about the security / encryption side of it. If transactions are done only between the card and the reader, could one use a reader at home to alter the balance? If you can load the card on you phone I assume you can use the phone to read it, but that might not be true.
Anyway it was a great read! Glad to see somebody writing without (obvious) use of LLMs.
Various versions of these cards could be accessed to change the balance, including extracting the key by differential power analysis
[edit] Looks like this finally became public recently https://www.techtimes.com/articles/321138/20260721/japan-con...
I’m in Japan right now on a holiday and I was blown away by how easy it was to get set up with Suica through Apple Wallet / Apple Pay. In fact, I did the initial set up back home in Toronto just by tapping a few buttons in the native Apple Wallet app. Took probably 30 seconds.
It is so convenient to use Express Transit Cards on iOS… I also just found out that there’s something similar for Presto cards in Toronto so I’m going to have to set that up too.
The combination of its speed and universal acceptance across Japan makes this by far the best system anywhere. Despite being decades old, it’s still better than “new” systems being rolled out elsewhere.
Want to buy a drink while waiting for your train? Just tap the same card. It’s magical and way faster than ApplePay or similar tech.
I am literally on a flight to Japan right now, and one of my main goals is to add a Suica card to my collection of transit cards from around the world (currently 31 cards large).
Sadly physical cards may only have a few years left, for the most part using tap-to-ride is superior. So I really have to get out there and grab them while I can.
A noble goal. Last I heard the best bet to gete a physical Suica card is to get the Welcome Suica. It is available at a few airports and a few large train stations:
https://www.jreast.co.jp/en/multi/welcomesuica/welcomesuica....
One thing that surprised me was that certain ramen and soba shops didn’t accept cards at all and the only non-cash payment option was the IC card.
An Indian curry restaurant in "my" local Aeon only accepts PayPay or cash and that's it, so you get all kinds. Other than that I've been able to use my Suica card in surprising places.
In the past I've purchased a rail pass because I figured it'd be more economical but last trip we just got a couple of IC cards and just booked our shinkansen and that was honestly the best experience. The problem with the rail pass was that it could only be used on some services, and the IC card was usable on most. The most confusing thing is just figuring out which local transport companies have a slightly different network, but it was honestly not bad.
I still have my Passmo card from my very first visit to Japan in 2008. I went back in 2018 and it still worked and had a balance. I used it as recently as 2025. Pretty cool!
It's a bit of a shame that the long-term "wow" factor has been somewhat negated by the new tourist cards that expire after four weeks ("Welcome Suica" and "Passmo Passport"). It looks like you can get the regular cards everywhere again if you want now, but when I visited in early 2024, there was a months-long shortage of regular cards going on,* so the airports only had those temporary cards available, meaning a whole lot of people came and left only ever getting a temporary one. (I went out of my way to get "real" permanent cards from a couple of other regions, although I regret not collecting more of them at some places I passed through.)
* I have no idea how a shortage of hardware would make it better to give out temporary, expiring cards than permanent cards, since I assume they use the same technology (and the temporary ones would cause more churn, if anything). But that was the story at the time.
The joys of single supplier most likely. Probably contracted to provide 1 mil a year or something then if tourism greater than that have the "disposable" ones... doesn't need to be any hardware difference though a simple time limited cards get activated with expiration date and server auto permanent inactivates them.
Could be because of some payment regulation. IIUC prepaid payment method in Japan has to maintain a large sum of deposit to cover cost of refunds in case of insolvency situation. Balances on expired cards probably aren't used for that deposit calculation.
Also IIRC, relationship between Sony and JRE had soured few years ago and the fab in Japan that manufactured Suica cards was shut down. The contract went to Panasonic, but looks like Panasonic then sold off the smartcard unit to Nuvoton, and likely some security/nationalistic issues around that was the cause of the card supply issue.
There are really subtle cues to tell the model number(smartcards have model numbers!) and manufacturer of cards, most simply in tiny dent created by the cavity to hold the chip. Sony ones were circular and current cards are racetrack shaped.
The best thing that you can add a Suica, PASMO, ICOCA, or TOICA card anytime to your Apple Wallet. You don't even have to be Japan. Just add transit pass and that's all, when you are there you can start using it instantly. But it works with a lot of cards all around the world (Hong Kong Octopus, Korea Tmoney, SF Clipper etc.) it's in the Wallet app itself.
Even though I've never been to Japan I have one of these loaded onto my phone so I can use it to sign in to beatmaniaⅡᴅx arcade machines lol
Suica was excellent when I had the chance to use it. I used the Apple Pay version and it worked flawlessly. I think I do prefer what I'm seeing more and more in the US with a tap-to-pay so I don't have to learn a new system, but Suica was so universal that I really couldn't complain. Makes sense especially with the larger diversity of digital payment methods and cash prevalence in Japan.
The really nice advantage of Suica is its speed. Yeah credit card tap to pay is alright, but it's relatively slow, taking multiple seconds.
Now QR code payment seems to be taking off in Japan, but unfortunately you can't access it as a tourist.
Credit card tap-to-pay doesn't have to be slow. The transaction could be done asynchronously, and some payment schemes even explicitly classify transit transactions as impossible-to-fail and will ignore things like overdraft limits.
Similarly, it could also be implemented via a rolling payment hold loop. Unattended petrol stations do something similar: you first insert the card to authorize a hold (say $200), then fill up the car, then finalize the transaction - at which point your $50 bill is actually deducted and the hold on the remaining $150 is released. Transit could do the same, with only the very first transaction being slow, and each terminal containing a list of pre-authorized cards.
There are several types of QR code payments getting introduced, so it would be interesting to know the specifics. I'm only aware of using a QR code for Shinkansen tickets, which is something I have used and something a tourist can use as well. And then there's the new tickets slowly getting introduced in some areas, where the paper ticket has a QR code. I've not seen those yet, but it sounds like just an ordinary ticket otherwise.
I mean general QR code payments as opposed to QR codes on tickets. First noticed them at convenience stores, but vending machines have them too, and I think some restaurants.
Suica is incredible, I remember when I first visited Japan in the 2010’s I was amazed at the speed and ubiquity, now in America that tap to pay on transit terminals are becoming more ubiquitous I feel somewhat disappointed at the “lag” I feel compared to the suica transactions
Wait, the balance is stored on the card? I'm fairly sure the balance is shown in the JR app too, so presumably that cannot be the case. [Update: or maybe not? I opened the app now and it's asking me to enable NFC and hold it up to the card.]
Anyway I love my Suica. I got it a good decade or more ago, I have a few thousand yen on there, and it's always ready for me when I go back to Japan. Useful on the Metro, trains and in shops. Easy to top up at the plentiful, dedicated top up machines. I also loaded Shinkansen tickets on it last time and travelled "ticketless".
The original Dutch system used a very similar approach: the card not only stores the balance, but also a history of taps, and information about the travel products. Your travel history is available on a website, but new trips are only shown after a terminal has asynchronously uploaded your new data.
Fixed terminals (like at a train station) near-instantly upload it, movable terminals (like in a bus) have a bit of a delay and sometimes only upload when the bus arrives back at the depot. It is possible to add new travel products or balance from an app / website, but you have to visit a special "pick-up terminal" to update the card.
Yes, they do store the value. There was a blogpost posted to HN last year that discusses the cryptographic features of these cards [1,2]. It's amazing that these cards are almost solving the problem of secure digital money.
[1] https://news.ycombinator.com/item?id=43993711
[2] working link since original blog is down https://web.archive.org/web/20250517082035/https://aruarian....
Alt link because archive.org is down now: https://archive.ph/V8H5s
The card definitely stores the balance. They probably sync the transaction records to their servers, but during the transaction the value on the card is presumed to be the truth AFAICT.
Remember when the system was designed in the early 2000s the Internet was much less available and reliable, and when so many transactions happen every day, you don't want to get thousands of passengers stuck inside a metro station only because some Wifi router was down.
This is basically a limitation of the CAP theorem, in these situations there's really no choice but to sacrifice "consistency" and settle for eventual consistency.
I think even credit card payments for transit also make that sacrifice. I had a weird experience using a Visa card to pay for a tram ride because they were promoting it and had a discount. The machine indicated success and let me through, but since I rarely used the card, somehow the payment didn't go through afterwards (the credit card was in a very weird state). If they insisted that all the payment transactions complete successfully for a transit payment, it would be too inconvenient and unreliable to use.
Credit card payments have an "offline" mode for the same reason - before ubiquitous broadband, a shop may have to dial-up to the bank to verify a card, which is slow. Debit cards that run on the credit networks can have that enabled or disabled depending on trust.
Remember originally credit card payments worked by putting the card under a slip of carbon-copy paper and rubbing off the raised digits. All the digital stuff ontop of that was just for efficiency.
Op mentions that server side sync occurs outside of 200ms card/reader interaction.
I'm fairly sure the balance is shown in the app too
Can confirm that Suica shows the balance in Apple Wallet.
Coming from NYC and being used to swiping once to pay a flat fair, my first Suica lesson was they vary the fair by the distance traveled. This means you have to tap in AND out of buses and subways. It was a bit embarrassing and frustrating when I almost could not board a bus in Sapporo with my friends after they all tapped in and my card was rejected. WTF? Thankfully the bus driver showed me a sign in English telling me I forgot to tap out of a station or bus. Oh. He let me board the bus with my friends. Found a train station and the woman at the counter began holding up a series of English signs so we could figure out where I forgot to tap out to ensure the correct charge is applied then sent me on my way. Turns out I goofed up transferring between the Tokyo subway and Shinkansen where I didn't tap out of the subway, got stuck, and a frustrated transit worker just opened the gate to let my dumb tourist ass through meaning I didn't tap out of the subway.
I was floored when I found out you could pay for stuff with my "Japanese MetroCard." It's quite a wonderful system.
We should have tap in/out in NYC too, it gives another opportunity to catch a fare evader
It also allows for easy in-transit checking: anyone on the "secure" side of the fare gates must be in possession of a card whose last transaction was a tap-in. There's no chance of a cheeky "it wasn't me who jumped the turnstyles - it was my lookalike", and you can have roaming groups of ticket validators who board random carriages and check everyone.
The FeliCa NFC standard made its way into more than just transit cards in Japan. One notable user is the Amusement IC network, which lets you quickly log into arcade games across multiple manufacturers using a single card. Some implementations (Konami's e-amusement most notably) even go as far as to allow any FeliCa-compatible card or device to be linked to a profile, including transit cards, phones (with no app required!) and certain models of Sony Bluetooth earbuds which use FeliCa for quick pairing.
> Some implementations even go as far as to allow any FeliCa-compatible card or device to be linked to a profile
This is also put in use in many karaoke joints to save a list of your favorite songs/song history.
Suica is amazing until it isn't, recharge with credit cards can be a miss. Doesn't work everywhere in Japan too.
When I visited, my Visa card didn't work anywhere except 7-11 ATMs for some payment network reason. So the Suica card was a lifesaver.
If you get a children’s card, they print your kids name right on it. It’s a nice little souvenir to keep.
There also seems to be some state logic as well. The card knows when I’m in the middle of a trip and doesn’t update the balance until a future tap when it can determine the extent of the trip (presumably). Very cool that it’s all done locally.
> fast
What are y'all comparing it with?
I’ve tried to find videos online but they all seem… normal?
It's normal speed for a transit card. in that you can tap and walk without slowing down.
But it's really quite fast compared to more general balance card services like NFC/tap to pay, etc.
Probably compared to widespread MIFARE cards or more complex Calypso cards, which are noticeably slower (not a dealbreaker though imo).
For me, other than the speed and convenience, I was amazed that I could use my same Suica card (on my iPhone) in Tokyo, Kyoto, Osaka, and Fukuoka. Even though each region has their own card, they have mutual use in most areas.
Weird romanization, wouldn't it be "suika"? There's no "ca" grapheme in common Japanese romanization systems iirc.
The article explains it is romanized that way since it comes from "card".
I’m going to Japan soon. Should I just use the iPhone Suica version or get the physical one?
I was in Japan last year. iPhone version was super easy and worked flawlessly for me.
Agree! Just a heads up for folks that you’ll likely want to download the Welcome Suica app which is aimed at tourists.
The regular Suica app is separate and is not English-friendly (this may be worth it for you only if you’re staying long term, ok with the language barrier, and want a card that doesn’t expire).
Is it the Apple Wallet version or the actual Suica app? I'm wondering about the Apple Wallet one.
Apple Wallet version is enough for 99% case. You do need the suica app for things like purchasing green car ticket etc.
How is it different from the Oyster card in London?
Suica works virtually everywhere https://www.jreast.co.jp/multi/suicamoney/shop.html
Imagine if you could pay with the Oyster card everywhere from Tesco to Greggs to National Rail to Uber
Actually you can find some small family shops, restaurants etc where they don't accept credit cards but Suica only
FeliCa (or called NFC Type-F) is so great and the fact that it's dominant in Japan even made Apple to include FeliCa support on global iPhones!
i imagine not being reliant on american payment networks for your nation's retail economy has lit a fire under their asses.
>Project leader Akio Shiibashi originally set a symbolic launch target: January 1, 2001, the first day of the new millennium.
I'm getting off-topic here, but I really appreciate it when people get this date right.
> When you tap your card on a terminal, it reads and rewrites the card locally in an instant, with the entire transaction processed in under 200 milliseconds. For each tap, the card and terminal mutually authenticate each other and generate a fresh encryption key to prevent spoofing.
This is the part that I'd be interested in reading more about. I'd known there must be some data on the card itself (since I can still use smartphone apps to read my cards now that I'm back in the US), but assumed there must have been some server connection too since storing anything authoritative on the card would invite tampering, and wondered why they would've bothered to store a log of recent trips on the card itself in addition to the hypothetical servers. It does make sense for latency reasons that they'd design it for the card itself to be authoritative, but I wonder how they do prevent tampering.
It's largely the same as credit cards - the card have multiple data partitions and secure read/write are encrypted. Balances are logged on both the card and the station-level servers and correctable errors and/or mid-ride updates, if any, are propagated while the user is in motion, so that they can be written upon exit.
^ that was the official explanation for a long time, but they've reportedly transitioned to more credit-card like online system with no station-level servers, and also raised fees, which was negatively received by many rail operators aside JR East itself(which owns the system). There had been few rail companies experimenting with NFC credit card rides, though I'm personally suspecting it's more of bargaining power development.open threat than those lines seriously considering a switch.
The chips in the cards are secure enough that physical tampering is extremely difficult and software tampering is difficult enough with security by obscurity + encryption - the catch is that, it turns out, early Suica cards used DES(not even 3DES it seems), and they just didn't tell anybody until those went out of circulation. Plus, the prepaid limit of 20k yen(local equivalent of $200) limits abuse potential of the system; it's not worth trying to commit blatant frauds on the train-and-sandwiches card.
> Plus, the prepaid limit of 20k yen(local equivalent of $200) limits abuse potential of the system; it's not worth trying to commit blatant frauds on the train-and-sandwiches card.
I don't think a limit on the value stored on the card limits the potential of fraud. I'm not imagining someone would load tens of thousands of yen onto their card. I'm more imagining someone setting the card to have enough money to get through the gate, every time they want to use the train. I'd agree fare is cheap enough that it's probably not worth someone's time to figure that out, but it would add up over time if someone did it (and especially if the method for doing so got passed around).
I also understand that there's two-way communication with one-time/expiring keys that would prevent a simple replay attack from working. Really just interested in understanding the entire mechanism in more detail! It gets handwaved as just "encryption" in a lot of discussions, probably due to a combination of intentional obscurity (like you mentioned) and it just not being super interesting or relevant to most contexts.
(Also, good point that the servers would still allow significant deviations to be caught and the card rejected/flagged in the system-- I've also seen that concept mentioned elsewhere after trying to research it a bit more.)
I remember the stored-value transit cards in Sweden in the 90's/00's. They were just magstripe cards with the value on it and a basic checksum value. It was not hard to figure out how to rewrite the card with a higher value, or just clone it, value and all, onto a separate card. No online component, as mobile networks weren't great when the system was designed.
They'd download their transaction logs out of the buses every night and do a reconciliation. If they found a card where the value went up or had impossible travel times, they'd look at the travel routes/dates and wait around on the "hackers" commute route with a police officer until they showed up. Very manual.
>Every Suica card has a chip storing two things: a unique card ID, and your current balance.
This is not true. It also stores some history on where you have last entered so it can do things like transfers or block you from exiting an area that you never entered.
> The cards have no battery and aren’t self-powered in any way. Instead, the reader on the gate emits an electromagnetic field that powers the card just long enough to complete the transaction.
Brillant!
This is how all passive RFID works. It's pretty cool. There's even systems that are both passive and active. For example, as a Disney adult, I'm familiar with their magic bands which do have a battery but also work passively. For tying ride photos automatically to you the battery matters because you're either moving too fast or are too far from the camera for passive to be consistently effective. But for simply using it as payment or a ticket you're pressing the device up against a reader and no matter how old the battery is it'll continue working.
At a first glance passive RFID would be a perfect match for ride photos, the whole mechanism is ridiculously fast so speed of the ride would not matter much (the technology works at highway speeds just fine) and can work over ~15 meters.
But there are two somewhat significant issues with the radio layer in this application: the geometry of tag antenna is somewhat critical (making it into a band would be problematic) and the back scatter is attenuated by salt water blobs (ie. people) almost perfectly.
> The cards have no battery and aren’t self-powered in any way. Instead, the reader on the gate emits an electromagnetic field that powers the card just long enough to complete the transaction.
Brillant!
AT&T showed this in television commercials back in the 1980's.
"Can you go through a toll booth without stopping? You will. And the company that will bring it to you is AT&T."
The 90s https://en.wikipedia.org/wiki/You_Will
Lots of those things happened (maybe not faxing from the beach), but AT&T didn't bring us very many of them.