Interesting read.
HARDWARE TO BEAT SOFTWARE
The device is called Game:ref, and it rests between the player's mouse and the PC on which they're playing. "My prototype only detects a certain kind of cheat for now," he told Polygon. "Specifically cheats that relate to input methods, whether it's the keyboard or the mouse."
When you move your mouse in a first-person shooter, your view changes. That relationship between the movement of the mouse and what it does to the game is the key to cheat detection. "What cheats tend to do is they screw up this correlation... the aimbot sort of aims for you, so there's an artificial movement that happens in the game, that you're not making with your real hand."