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    # 20 марта 2002 21:29

    David Ulmer, 55, created "Geocaching"--a hide-and-seek, high-

    tech treasure hunt game for gadget-loving adults that uses a

    hand-held Global Positioning System (GPS).

    The idea of Geocaching is to set up caches all over the world

    and share their locations on the Internet. GPS users use the

    location coordinates to find the caches. Once found, they take

    something from the cache and then leave something, and write

    about it in the logbook.

    The word Geocaching stands for this: GEO for geography, and

    CACHING for the process of hiding a cache. A cache is a term

    used in hiking/camping as a hiding place for concealing and

    preserving provisions, or a term for stashed provisions used

    by the military or outdoorsmen. About 90,000 people in 103

    countries are Geocaching players seeking items hidden in

    40,000 caches around the world with the help of their GPS

    units and using clues posted on http://www.geocaching.com

    Ulmer said he came up with the idea because he wanted to find

    a new use for the GPS navigation system, a constellation of

    satellites that provide navigation signals free to anybody

    with a receiver. A GPS unit can determine your approximate

    location within six to 20 feet on the planet. One needs to

    enter a "waypoint" where the geocache is hidden.

    The Geocaching website calls it "the sport where you are the

    search engine". Geocaching constantly reinvents itself.