Safeway experimented with that here (UK) about fifteen years ago. I used it. It worked, but I don't think it saved that much time, since shoppers are much slower at doing the scanning.
For enforcement they used sampling: at payment time, you were sometimes required to have your items scanned by a cashier anyway. The theory was that the more reliable you showed yourself to be, the less likely you were to be selected.
I haven't seen back to the store that they trialled it in recently, but I guess that it didn't work for some reason since it has not become widespread.
For enforcement they used sampling: at payment time, you were sometimes required to have your items scanned by a cashier anyway. The theory was that the more reliable you showed yourself to be, the less likely you were to be selected.
I haven't seen back to the store that they trialled it in recently, but I guess that it didn't work for some reason since it has not become widespread.