Amazon’s latest patent is a delivery drone that understands when you shout at it

Amazon has filed a patent for a delivery drone that responds when you call or wave at it. The patent was spotted by GeekWire and the concept drone is designed to recognize human gestures, and then respond accordingly. Gestures the drone would recognize include, for example, waving arms, pointing, the flashing of lights, and speech. (The illustration shows a man wildly waving his arms and with a speech bubble next to his mouth).
The patent was initially filed in July 2016 and published this week