They'll also do that at Sam's Club when the lines are long. They scan everything while you're waiting and when you get the cashier, she just scans your card, looks over your cart, briefly, and that's it.
I like them, but sometimes I don't get my "bag discount" for bringing in my own bag, so a cashier would have to help me out anyway. Otherwise, I really like them. They had them at my Wal Mart until they remodeled and I used them each time I was there. However, they said they were always...