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> you have to pay by scanning QR codes

I've never encountered that, but that sounds like a venue that doesn't want my money anyway.

It happens a lot in societies where people know and trust each other.

Often you can even buy drinks by scanning a QR code, paying, and then grabbing a drink from the fridge. With nobody else involved.

While not disagreeing with what you said, such "grab a drink from the fridge" things are always in a monitored environment. There are no unlocked public fridges even hyper-high trust societies like Japan or Dubai.

No. In baltics, northern EU you can encounter countryside unsupervised apples, tomatoes and even honey where you take it and put money a box. No camera.

Also, even with cameras, it is little help of I am a tourist. In Switzerland, I was in such a store in a mountain village.

I visited there once - no point trying to find me if I stole something.

Same in Farms around Vancouver, Canada

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