Amazon Go, in Seattle, has been tested by staff for the past year.
It uses hundreds of ceiling-mounted cameras and electronic sensors to identify each customer and track what items they select.
Purchases are billed to customers' credit cards when they leave the store.
On entering the store, shoppers walk through gates similar to those in the London underground, swiping their smartphones loaded with the Amazo.n Go app.
Then they are free to put any of the sandwiches, salads, drinks and biscuits on the shelves straight into their own shopping bags.
There's no need for a trolley or basket, since you won't be unpacking it again at the till. In fact, unless you need to be ID-checked for an ******* purchase, there's also no need for any human interaction at all.
