GPS means Global Positioning System. This is worldwide radio-navigation system formed from the constellation of 24 satellites and their ground GPS stations.
This system was designed for operation of U. S. military. But at this time so many normal users and using this system around the world. Global Positioning System tracking is method of find original position of device / person.
GPS System provides special satellite signals, which are processed by a receiver. These GPS receivers not only track the exact location but can also compute velocity and time.
Now GPS system is coming all Smartphone’s, GPS Devices use for Motors etc.