A customer walks out of the Amazon Go store, without needing to pay at a cash register due to cameras, sensors and other technology that track goods that shoppers remove from shelves and bill them automatically after they leave, in Seattle

A customer walks out of the Amazon Go store, without needing to pay at a cash register due to cameras, sensors and other technology that track goods that shoppers remove from shelves and bill them automatically after they leave, in Seattle

A customer walks out of the Amazon Go store, without needing to pay at a cash register due to cameras, sensors and other technology that track goods that shoppers remove from shelves and bill them automatically after they leave, in Seattle, Washington, U.S., January 18, 2018. Photo taken January 18, 2018. REUTERS/Jeffrey Dastin