Amazon's Just Walk out Technology

Consumers can enter a Just Walk Out technology-equipped store using one of three methods—method types available can vary by store: (1) Amazon One, a contactless identity service that uses your palm to pay; (2) credit or debit card; or (3) app-based entry, using retailer-branded apps. All entry options allow the Just Walk Out technology to identify which account has entered the store and then charge for the items selected when consumers walk out with items.