Keven Walgamott lost his left hand and part of his arm in an accident 17 years ago. But he has been able to regain movement and control of the limb with a prosthetic arm. It's called the LUKE Arm, as it takes inspiration from the prosthetics of Star Wars character Luke Skywalker. Developed by scientists at the University of Utah, the prosthetic arm allows people to use their minds to perform delicate tasks. The device has been 15 years in the making.