It almost sounds like something from a Philip K. Dick novel, but the MeCam is a real product from Always Innovating. The tiny camera is mounted to a small helicopter that "follows your every movement" and takes video. It even supposedly uploads it to your social media networks and works without a remote control.
Considering it's not on the market yet, there's not much more information on how it all works. But take a look at the introductory video below.