TomTom RIDER 2nd Edition User Guide - Page 67
How Does Navigation Work?, Global Positioning System (GPS), Maps
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Page 67 highlights
Chapter 18 How Does Navigation Work? How Does Navigation Work? Global Positioning System (GPS) In order to navigate you to your destination, your TomTom RIDER must know where you are now. To find your current position, your TomTom RIDER uses the Global Positioning System (GPS). GPS is available for free and without subscription. GPS uses satellites to transmit signals to GPS receivers. Your TomTom RIDER has a built-in GPS receiver. Using the GPS signal, your TomTom RIDER can work out where you are and how fast you are going. GPS signals work in all weather, anywhere in the world. Note: Your TomTom RIDER does not transmit your position, so others cannot use it to track you while you are driving. You can however send your position to TomTom Buddies. For more information, visit www.tomtom.com/plus Maps Once your RIDER knows where you are and you have told it where you want to go, it uses the digital map on the memory card or hard disk to work out the best route to your destination. 67