in most factories, they are kept in cages so nobody can get close enough to be hurt. >> reporter: this changes that. >> as the robots move, the cameras around the work cell analyze everything going on in the work cell, identify the robot and project where all the points the robot may reach. >> reporter: with an emphasis on assisting humans rather than replacing them. >> humans have judgment way beyond what robots provide. people and robots can work together to get the work done. >> reporter: others are focusing on where humans can't go. at m.i.t., this cheetah three is aimed for things too building, difficult or dangerous like building fires ar disaster sites. >> think of a power plant or high radiation area or sometimes you want to send a robot in a very high temperature area. so, we can think of many places