Gps is used for live tracking. GPS is a satellite based global navigation satellite system, GNSS that is used to provide accurate location and time information anywhere on or near the Earth. GPS is run and maintained by the US government, although access to it has been opened up so that it is freely available worldwide when used with suitable GPS receivers. Typically GPS is able to provide position information to within a few metres, allowing accurate positioning to be made. It is also possible to extract timing information that enables frequencies and time to be very accurately maintained. Frequency stability performance figures of systems using GPS timing are far in better than crystal or many other accurate frequency sources.
A real time GPS tracking device continually sends digital messages to space satellites to triangulate the unit’s current location. A real time GPS tracking device is constantly transmitting this data to the internet in real time, where you can monitor your GPS tracking device. Most GPS tracking devices also give other information like time, place, and how fast the tracker is travelling. Once used primarily by law enforcement agents tracking criminals, GPS spy technology is now common to employers tracking company vehicles.