[dkarras]

If you enable hand tracking (without controllers), they explicitly notify that they are collecting data about your hands. Combine that with your arm length, hand size / shape, height and I bet you'd be pretty unique. If there aren't enough bits, data about "the way you move" or stand, general posture etc. would be more than enough to identify you I believe. A simple DNN can eat that data like breakfast. I don't care much but it is interesting nonetheless.