Gone are the days when getting from point A to point B involved reading maps, stars or the position of the Sun. Though the global navigation satellite systems were initially developed for the military, it has been in widespread civilian and commercial use for over a decade. The modern navigation systems offer a multitude of functions that ensure one will never get lost, such as planing of the shortest route, interactive guidance and maps covering most of the globe. Learn more about these systems, their history and functionality in this book.