An Amazon.com Inc. employee scans in to shop at the Amazon Go store in Seattle, Washington, U.S., on Wednesday, Jan. 17, 2018. After more than a year of testing with an employee-only focus group, Amazon Go opens to the public Monday in downtown Seattle, putting to the test the online retailer's technology that lets shoppers grab what they want and leave without paying a cashier. Photographer: Mike Kane/Bloomberg via Getty Images