Amazon’s automated grocery store uses cameras & sensors to track what shoppers remove, customers billed using credit cards on file…

The Seattle store, known as Amazon Go, relies on cameras and sensors to track what shoppers remove from the shelves, and what they put back. Cash registers and checkout lines become superfluous – customers are billed after leaving the store using credit cards on file.

For grocers, the store’s opening heralds another potential disruption at the hands of the world’s largest online retailer, which bought high-end supermarket chain Whole Foods Market last year for $13.7 billion. Long lines can deter shoppers, so a company that figures out how to eradicate wait times will have an advantage.