I know in Japan for instance, there’s a unmanned store where you can buy things with the only thing meeting you near the front entrance & exit is self checkout. It’s a trust based system where you walk in select what you want (without locking any essential or mundane item behind plexiglass), as in they depend on individuals having common sense on not stealing paying via a “honesty box” based on a honor system.
I saw one in China almost a decade ago. QR code in at the door and grab whatever you need, your account gets charged with whatever you take. Wasn’t very big, maybe 4m X 4m. Had cold drinks and snacks. Was more a gimmick for me than something I would search out to actively use.