With its palm open, the robot is completely motionless. A split second later, it suddenly unwinds and catches all sorts of flying objects thrown in its direction — a tennis racket, a ball, a bottle. This arm measures about 1.5 meters long and keeps an upright position. It has three joints and a sophisticated hand with four fingers. It is unique, as it has the ability to catch projectiles of various irregular shapes in less than five hundredths of a second.