Sat Nav or Gps ( Global Positioning System ) Was made by the U.S Department of Defence.
It became fully operational in 1993 and it was inevitable that it was going to be used to help us navigate are way. There are between 24 and 32 Satellites in orbit which allow gps enabled devices to gather a navigational fix along with time and current velocity.
Below we have some of the Best and most up to date systems currently on the market.
