Exactly. I've done some lab work on reading muscle activity signals trough the skin, and the signals from the test subjects were very individual. The mass prod

Exactly. I've done some lab work on reading muscle activity signals trough the skin, and the signals from the test subjects were very individual. The mass produced prostethic limbs with control systems are mostly mechanical and slow, e.g. the users are using the remaning stump of their limb to push buttons on the inside of the casing. To use neural networks or some other kind of machine learning to map the muscle signals to the wanted movement for the prosthesis would be a really interesting problem to work on.