FILE PHOTO: Amazon Go Vice President Puerini uses her smartphone

FILE PHOTO: Amazon Go Vice President Gianna Puerini uses her smartphone to scan herself in to a smaller format Amazon Go store, which will be open to Amazon employees and their guests, in the Blue Shift Amazon office space in downtown Seattle, Washington, U.S., December 10, 2018. Picture taken December 10, 2018. REUTERS/Lindsey Wasson/File Photo