The Amazon Go store here in downtown Seattle opened today to the public (required for entry: an Amazon account and a phone with the Amazon Go app). I still have to go and check it out.
The main store concept is that there are no check-out lines. There are hundreds of cameras in the ceiling, sensors on the shelves, and bluetooth beacons in the store, to track and update what is taken as the shopper goes through the store. As far as I can tell there are no physical carts that one pushes through the store (I don’t see any in pictures from inside the store). The shopper brings a carry bag/ shoulder bag to put items directly into. So this is smaller volume and higher-end grocery shopping than at say, one’s traditional grocery store.