Mouse movement in competitive FPS is not random. It has structure. It has character. If you've spent five thousand hours developing your mechanics — your flick speed, your tracking style, how you land on a head, how you correct when you overshoot — that accumulated muscle memory has a shape. A statistical fingerprint. It's as specific to you as your handwriting, and in some ways more reliable, because it was built over years and lives in your hands rather than your head.

A world-class player doesn't just have better aim than you. They have a different kind of aim. Their velocity curves during a flick shot. The micro-tremor signature from their hand at rest. The precise ratio of large gross mo…