It's the next step removed from the tablet based ordering that has taken over in restaurants. Like those tablets, it won't be everywhere, but its easy to imagine it being ubiquitous, especially in chain stores.

Tablets? We now have QR codes on tables that point to the menu online, including payment gateway.

I can't believe you made a throwaway to pretend to be a HN commenter just to defend your AI store. This is like Scott Adams behavior.