In old movies, if we wanted people or cars tracked we did so through transmitters that periodically sent radio signals to a receiver tuned to the same frequency. Problems ensued when the transmitter went out of the receiver’s range or when the batteries died.
The next technological leap in tracking is now made possible by something that sends signals from outer space, and whose batteries won’t run out—the Global Positioning Satellite (GPS).
Understanding GPS satellite tracking is simple. The GPS satellite communicates with any GPS tracking device so that you know, based on the satellite’s sent data, your own location—longitude, latitude, and altitude. All you need is a GPS reader and an Internet connection to access software that can provide you with the information on a map. This enables you to get the location within seconds and within a few feet as a margin for error.
This is useful is many ways. Advances in battery life, durability, portability and reduction in size have resulted in making available hidden GPS devices that are virtually undetectable to teenagers, felons, cheating spouses, truck drivers, cargo ship crews and even police officers.
