SEM™ Glove (Soft Extra Muscle Glove) from Bioservo. Assistive technology for a weak hand grip. "The fingertips in the SEM Glove are equipped with force sensitive sensors that register when the user grasps an object. A microcontroller calculates the desired added force and controls small engines that in turn regulates tendons connected to the fingertips of the glove. The tendons pulls the fingertips and an extra force is created." The glove is powered with two lithium-ion batteries.