Atari Mindlink

Back in 1983 Atari was working on a controller that could read your mind called the Atari Mindlink. It was a headband you had to wear with a couple sensors on it. Unfortunately it never worked the way it was supposed to. It wasn't actually designed to read your mind, instead the sensors would read the movement of your eyebrows. It never made it to getting sold in stores because people got headaches from trying to move their eyebrows the correct way.