Computer hardware and recorded software systems for tracking people, objects and pets using GPS data on a device on the tracked people, objects and pets; Electronic devices for animal locating and tracking programmed to use global positioning systems (GPS) and cellular communications; Electronic devices for locating and tracking lost articles, people, pets using radio frequency, global positioning systems, cellular communication networks; Global positioning system (GPS); Global positioning system (GPS) apparatus; Global positioning system receivers; GPS navigation device; GPS receivers; GPS tracking device to be worn on the wrist of an athlete during endurance events; GPS tracking devices; Magnetic locators; Protective carrying cases specially adapted for global positioning system (GPS) apparatus; Satellite navigational system, namely, a global positioning system (GPS); Vehicle locator and recovery device programmed to use global positioning systems (GPS) and cellular telecommunications; Vehicle mounted GPS sensor for determining the rate of motion for a vehicle; Vehicle locating, tracking and security system comprised of an antenna and radio transmitter to be placed in a vehicle; Computer hardware with preinstalled software for coupling a GPS receiver to the microphone input of a digital camcorder