We had a sushi restaurant (in Canada) that belonged to Chinese expat that worked with the whole QR code + order + pay on your phone and I did find it pleasant.

We had a sushi restaurant (in Canada) that belonged to Chinese expat that worked with the whole QR code + order + pay on your phone and I did find it pleasant. I would go as far as saying that I prefer it. It might be cultural, but I can count on a single hand the number of times I went to a restaurant and the interaction with the waiter/waitress improved the overall experience.