Global Positioning System (GPS) is the only satellite navigation system that works well. This system uses 24 satellites which send microwave signals to Earth. This signal is received by a receiver on the surface, and is used to determine the position, speed, direction, and time. System similar to GPS including the Russian GLONASS, Galileo European Union, India IRNSS. This system was developed by the United States Department of Defense, with the full name is NAVSTAR GPS (common mistake is NAVSTAR said a acronym, this is wrong, NAVSTAR is the name given by John Walsh, a important policy makers in the GPS program). This satellite collection maintained by 50th Space Wing United States Air Force. This maintenance cost of about U.S. $ 750 million per year, including the replacement of old satellites, as well as research and development. GPS Tracker or often called a GPS Tracking is a technology AVL (Automated Vehicle Locater) is allows users to track the position of the vehicle, or fleet car in a state Real-Time. GPS Tracking using a combination of GSM and GPS technology to determine the coordinates an object, and then translate them in the form of digital maps.