Amazon store opening in Seattle on Monday uses cameras and sensors to track purchases | Public Radio International

Sleek black cameras monitoring from above and weight sensors in the shelves help Amazon determine exactly what people take.

If someone passes back through the gates with an item, his or her associated account is charged. If a shopper puts an item back on the shelf, Amazon removes it from his or her virtual cart.

Much of the store will feel familiar to shoppers, aside from the checkout process. Amazon, famous for dynamic pricing online, has printed price tags just as traditional brick-and-mortar stores do.

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Amazon store opening in Seattle on Monday uses cameras and sensors to track purchases | Public Radio International.