Earlier this year, Whole Foods rolled out their "Just Walk Out" shopping feature where one can scan a QR code tied into your Amazon.com account upon entering the store, and then skip checkout by again scanning your QR code upon leaving the store. Cameras throughout the store, along with Wifi signals, track everything you do including scanning what products you put into your cart, or take out. This technology is currently being tested at a Whole Foods store in Washington D.C., and one in Los A...
