This is a comedy film by Matt and Alessio made about life in China, which has by-passed the credit/debit card revolution and gone straight into QR based cashless living.
Virtually everything can be bought in this way in China, as the film amptly demonstrates, all you need is a phone, and some money attached to your WeChat or AliPay account.
It is surprising to see how far forward China is in this respect, way ahead of most societies elsewhere that I am familiar with. This is where we are all heading.