A few grocery chains in Tokyo have clerks that take items from your basket, scan them, place them neatly in a 2nd basket. On completion, they take 2nd basket and place it at one of two payment machines where you can pay with cash, card, or smartphone. Two payment machines are necessary to prevent congestion. If you have problems with payment they're quick to assist.
After payment, the customer takes the basket to a 3rd location to bag their groceries and leave. There are clerks available to assist.
It is amazingly fast, I had the misfortune of shopping at 6:00 pm. I looked at the lines and estimated twenty minute checkout, actually got finished in about five minutes. The basket size limits the amount of groceries which is a minus, but helps move around the store quickly vs a huge cart and checks out faster.
After payment, the customer takes the basket to a 3rd location to bag their groceries and leave. There are clerks available to assist.
It is amazingly fast, I had the misfortune of shopping at 6:00 pm. I looked at the lines and estimated twenty minute checkout, actually got finished in about five minutes. The basket size limits the amount of groceries which is a minus, but helps move around the store quickly vs a huge cart and checks out faster.