Anyone seen the luke arm? It dplicaes the seven axises of the arm, has 4 fingers and an opposable themb, in a simular format of the human arm. They salvage the arm nerve and rerout it to the chest where signals makes your pecs twitch,probes pick it up and command the arm to move. Also it has touch sensors that connect to a vibration motor so the more you crush a humns kneck, the more it vibrates.