They have cameras everywhere, and use face recognition, and all kinds of pattern detection algorithms just to determine what yogurt or salad you bought.
All they really need is just an app. Take a picture of your product or barcode, done. They can use the AI to recognize the picture of the product, like your fruits and vegetables. Or just scan the barcode.
Then, just walk out. Once you exit the gate, your Amazon account gets charged. No receipts. No cashiers. No more minimum wage jobs for a high school teenager. Done.
(Unless their goal is to do human pattern recognition, face recognition, movement detection, and gait detection? Which means they’re just using the Go stores as an experimental test bed, to freely capture all that valuable data. You consent to the data capture, just by walking into the store.)