Gps Facts

GPS receivers sold in the civilian market must disable themselves if they detect speeds above 1,000 knots (1,150 mph) or altitudes above 59,000 feet. These restrictions, known as CoCom limits, exist to prevent civilian GPS technology from being repurposed for weapons guidance systems.

In 2012, a running partner took his runner girlfriend on a run that ended at the place where they first met. When he showed her his GPS tracker, the tracked route read "MARRY ME".