When I was in Sweden, I was stuck when I saw a shop with no staff. However, Amazon Go takes it so much further. Here are some pictures of an Amazon convenience store, which sells a range of drinks, snacks and meals. All a customer has to do is walk into the store, take what they want, and they are automatically charged. No checkout, no cashier.
Some pictures are here.
A video explaining it is here
I am sure soon there will be many retail shops without cashiers.
