Researchers at MIT have developed a robot that enhances the grasping motion of the human hand. (Learn more: bit.ly/1tdPd2t) The device, worn around one's wrist, works essentially like two extra fingers adjacent to the pinky and thumb. The robot, which the researchers have dubbed "supernumerary robotic fingers," or "SR fingers," consists of actuators linked together to exert forces as strong as those of human fingers during a grasping motion. Video: Melanie Gonick, MIT News Additional footage courtesy of Faye Wu

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