I don't use a cashier if self-checkout is available. Supermarkets where I live have 2-6 kiosks, and there is usually one employee overseeing it and helping peo

I don't use a cashier if self-checkout is available. Supermarkets where I live have 2-6 kiosks, and there is usually one employee overseeing it and helping people. Once in a while a kiosk will beep and the employee has to pick out a few random items and scan them. If they scan something you didn't pay for - you're in trouble.