France has a workable system - you do all interactions with the machine - it doesn't weigh your items - but a clerk oversees you (along with another 3 ppl) and

France has a workable system - you do all interactions with the machine - it doesn't weigh your items - but a clerk oversees you (along with another 3 ppl) and checks your receipt against your bags at the end. Like the Costco receipt checker, it's very unlikely this person will flag anything unless you're suspicious as hell. It's like those "eyes stickers" in Asia - to keep honest people honest.