“QR code” used for purchasing fee and entry to particular websites. You can use it by merely scanning it together with your smartphone. I feel there are various individuals who use it day-after-day. However, it’s mentioned that the abuse of this QR code is rising now. If you unintentionally entry it, you could be in bother. (Digital protection group / Naoaki Shimada)
Source
Is that QR code actually okay? In order to not be deceived digitally | NHK
