GPS or Global Positioning System is the pground-based radio navigation systems by calculating the coordinate (Latitude and Longitude) from the CLOCK signal that was sent from the more than 2 dozen satellite travelling around the earth that has the absolute position >>>> this system can preform you where is your position everywhere in the world except somewhere that is signalless which the newer GPS system can perform you that is your speed and direction that you must use it with the TNTmips or the GPS mapping programme that was almost installed in the modern expensive car that you will not loss the way anymore you will know "where I am and What place that I gonna go" by this programme will show you the important place around your car and the direction which way you should go or shouldn't or the shortcut to go to that place