computer hardware and computer software for robotics and automation, namely, to track, control and improve robots; radar apparatus; position-indicating radio beacons; software for measuring distance and tracking location; electronics for detection and precision location, namely, integrated circuits and antennas, radio-frequency ranging, transponders; computer hardware and software system for tracking people and objects using radio-frequency ranging on a device on the tracked people and objects; wired and wireless electronic devices for locating and tracking people and objects using radio frequency ranging data