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Buzen's avatar

QR codes are just an optically coded string of text, simply a more flexible bar code. I wrote a software decoder for QR codes 20 years ago, and it’s generally a good idea that they were open sourced. NFC chips, like in Suica and credit cards and in smartphones are a more secure technology, and the only benefit to QR codes are they require only a printed code for the payee, but that is also the drawback, because the codes are not obviously readable to the naked eye, and anyone can replace a posted code with a counterfeit copy. I think Suica would have been a better choice, but the early cards from different railway companies didn’t interoperate, and it took a long time before they allowed Apple and Google to be able to put them into phones.

Lisa in Sapporo's avatar

Japan is finally starting to change, but for better or worse, it's still way too gentle on people who are like, “New things are scary” or “I don’t get how this works.” Like, up until just a few years ago, it was honestly wild that in Tokyo, you could only buy JR train tickets with cash or a JR-affiliated credit card. That must’ve been super inconvenient for travelers from abroad. That said, considering how often natural disasters happen here, it's definitely still a good idea to carry at least some cash.

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