There are two cashier-free stores nearby, and one is a bakery, they use audio recordings and video to guide customers to pick bread and honestly put coins into the box. The other is Carrefour supermarket, they have an automatic checkout machine and their merchandise is also read traditional paper price labels, usually used by young people.

A few years ago, I watched a video of a cashier-free store on Youtube and also in a magazine. ESL is very useful for logistics management, with or without people management.

Once,  A customer discussed with me about electronics, I swiped it with a strong magnet, and the text on the electronic board was all messed up. I'm not sure if ESL will too.  If there is a store without a cashier, I should pay honestly and not use strong magnets.

(ESL a wireless electronic price management system that replaces traditional paper price labels with electronic tags. )