Comment by Tor3

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.