How does TomTom use GPS?
TomTom develops the latest navigation software to bring GPS data and up-to-date map information together in a way that works perfectly with today’s portable devices. In order to locate your position, your TomTom device (with integrated GPS antenna*) or GPS receiver must have a clear view of the sky. It will not work if you are inside a building or in a tunnel. If the GPS signal is too weak, your TomTom navigation product will not know your current position. It will try to calculate your position based on the road you are on and the speed and direction you are travelling. When the GPS signal is lost, the Driving View is shown in black and white. *Note: some athermic heat-reflecting windscreens and built-in windscreen heaters block GPS signal reception inside the car. The magnetic, waterproof TomTom GO External Antenna overcomes this and ensures optimal GPS reception, should you place it inside or outside the car. Transferring self-made Points of Interest (POI’s) to your new map 1. Conne
