President Turns Off GPS Selective Availability
On May 1, 2000, President Clinton ordered Selective Availability discontinued, making GPS much more accurate for civilian and commercial users.

Where Am I?
From your About.com Guide, thanks to the Global Positioning System (GPS), you can keep track of exactly where you are on the planet.

Using GPS
Your Guide's adventure with a handheld GPS unit.

GPS End-Of-Week Rollover
From your About.com Guide, find out why some GPS units stopped functioning after August 22, 1999.

Global Positioning System Overview
A very thorough overview of GPS.

GPS Applications Exchange
Find out how people around the world are using GPS in a variety of industries.

GPS FAQ
Provides an overview of the Global Positioning System (GPS) from the U.S. Coast Guard, a major user of the system. Links to technical information and reports. A very good FAQ.

GPS Primer
An excellent illustrated resource about GPS. Includes nine pages of content plus images, from the Aerospace Corporation.

GPS: You'll Never Be Lost Again
Information about GPS tecnology and the latest products from CNET.

GPS World
Past issues of the GPS World magazine.

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