GPS tracking systems use satellites that are in a geosynchronous orbit around the earth to determine exact locations of objects or individuals to within several feet of resolution. GPS was originally used for assisting in locating military targets and also for navigation purposes. Recently, as the price of GPS technology has come down, civilian use has increased and accuracy has increase as well since the military no longer degrades the signal.

GPS systems are an asset to any company that makes deliveries. You can monitor your fleet, give drivers directions, and give the consumer an accurate ETA. They can even find that fastest delivery routes for drivers. For a lot of delivery companies, it is hard to imagine how they succeeded without GPS systems in the past.

A potential down-side to increasing use of these devices is the invasion of privacy some see these devices as presenting. Already, commercial drivers have their daily trips catalogued and analyzed. Similarly GPS tracking device technology has already been shown to be effective at allowing the tracking of individuals as these devices have been implemented in espionage for years.

GPS has also made significant inroads into the consumer market, allowing individuals to use GPS to lay out waypoints for hikes, set locations for camping or fishing, and allow individuals to navigate in unfamiliar territory. A new form of recreation called "geocaching" has also developed, involving a hide-and-seek game involving a container and a set of latitude and longitude coordinates.

GPS tracking systems have also allowed the development of a new automotive add-on, the in dash GPS receiver allowing consumers to request a location and have the device display or speak directions to the driver, making the paper map obsolete. These devices are already increasing in complexity and adding new features including hotel and restaurant information.

The use of GPS for various purposes will likely increase as the cost of devices continues to decrease. GPS technology is very flexible and can serve as a replacement for current technologies such as paper maps, and may play a role in future advances. Perhaps in the future GPS tracking will allow us to know the location of all of our possessions at all time, making theft and loss a thing of the past.