UK development firm 'Cambridge Consultants' came up with 'DelivAir'- a drone delivery system that brings your order right into your own two hands. Here's how it works: the drone uses GPS to find its way to your smart phone. How does the delivery actually get into your hands? Cambridge says to aim your phone's LED light up, and it'll blink a coded pattern telling the drone that it has the right person. The package is then winched down to you.