GPS
GPS is a worldwide radio navigation system that allows precision within a remarkable one centimeter. This means that the GPS can locate any GPS receiver to within one centimeter of it's actual location. As a result, there are literally hundreds of possible applications for GPS. Today, some of the most common uses of GPS are to provide navigation systems for cars, boats and planes, for monitoring movement during earthquakes, and to locate cell phone users that call in an emergency.
GPS has quickly moved from being mainly a military application to one that is almost ubiquitous with consumers. A wide variety of consumer model GPS receivers are now available, ranging from sophisticated automobile navigation systems (that often append in locations of restaurants, gas stations, hotels and other conveniences), to small portable units that can be carried by hikers or mountain bikers. As production volumes have increased, the cost of GPS has fallen dramatically and is now very affordable.
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