Personal navigation, vehicle tracking and public transportation have changed a lot with the evolution of the new GPS technology. With a simple GPS receiver you can access the orbiting satellites and get information on the current location, the destination and the shortest route to reach it. Moreover, new GPS devices provide information on hotels, traffic conditions, ATMS, restaurants and gas stations for the map on which you navigate. Discreet, convenient and highly reliable, the new GPS units have marked a shift in technological development and a new age of communications. Although functioning on a set of common principles, GPS units differ according to brand, design and features.