Using high-speed actuators with harmonic drive gears, this robot-hand can close in 1/10th of a second and perform skilful manipulation like dribbling a ball, spinning a pen, throwing an object, tying knots, grasping a grain of rice with tweezers, and tossing / re-grasping.
Robots from the Ishikawa Komuro Lab, you can find more information and videos about all products to their website
Very impressive, this technology can be helpful and potentially dangerous at the same time..