Geocaching (or geocaching) is a hobby of using the technology of free satellite (GPS) to find or hide a container (called "cache" or "geocache") in various locations around the world. A typical geocache consists of a small waterproof container containing a resistant and visitation record and one or more "treasures", usually worthless trinkets. Over a million and a half of geocaches are listed in 222 countries on various websites dedicated to the hobby community (McKinney, pp.31).
Geocaching was not technically possible before the deactivation of Selective Availability (selective availability) GPS on 1 May 2000. The first cache located by GPS and documented ...