You can use a Global Positioning System receiver anywhere you go on Earth to exactly pinpoint your location. You can mount a GPS in your car, on the handlebars of a bicycle, carry it in your pocket or wear it on your wrist. As long as it can pick up signals from at least three of the GPS satellites, it will calculate your location. There is no subscription service required to use a GPS device, although some additional and enhanced services do cost money. Writer Bio
