The main purpose of GPS is location tracking. GPS first started out as a military system and gradually also became a civilian utility. By using GPS tracking software you can pinpoint your location to an accuracy of 90%.
GPS tracking software can be installed on your laptop as well as your handheld devise or cell phone. Most commercial GPS tracking software available come pre installed with maps of different locations and additional maps can also be downloaded to the program. The map enables a lay person to make sense of GPS coordinates. Without the proper GPS software it’s easy not to understand the figures that the software shows you, and so it’s useful to have software that tracks your position on a map is useful.
There are a number of free as well as commercial software available, the choice you make depends on the type of options you require and the accuracy you need. Civilian GPS software does have its limitations but it’s useful if you find yourself in an unfamiliar place.
Most PDAs come equip with GPS software preinstalled, since a PDA is common and always available it makes sense to have GPS software installed on your PDA.