Changes

The system was developed by the US [[Department of Defense]] and made available to the general public in 1983 under orders of [[Ronald Reagan|President Reagan]]. GPS for civilian use used to include a mechanism called Selective Availability that intentionally limited the accuracy of GPS, a mechanism originally intended to confuse potential enemies who might launch a missile attack, but Selective Availability was disabled in 2000, and appears unlikely to be reinstated in the foreseeable future.

The system was developed by the US [[Department of Defense]] and made available to the general public in 1983 under orders of [[Ronald Reagan|President Reagan]]. GPS for civilian use used to include a mechanism called Selective Availability that intentionally limited the accuracy of GPS, a mechanism originally intended to confuse potential enemies who might launch a missile attack, but Selective Availability was disabled in 2000, and appears unlikely to be reinstated in the foreseeable future.

Prosecutors are now using data from GPS units to convict criminals. Authorities can analyse data from the GPS units to establish a defendant's whereabouts or to track suspects.<ref>[http://www.foxnews.com/story/0,2933,413041,00.html Small GPS Devices Help Prosecutors Win Convictions], Associated Press, ''Fox News'', August 28, 2008</ref>

Prosecutors are now using data from GPS units to convict criminals. Authorities can analyse data from the GPS units to establish a defendant's whereabouts or to track suspects.<ref>[https://www.foxnews.com/story/0,2933,413041,00.html Small GPS Devices Help Prosecutors Win Convictions], Associated Press, ''Fox News'', August 28, 2008</ref>

== History ==

== History ==