TechBits: geocaching beyond GPS (11.27.13) - ABC 33/40 - Birmingham News, Weather, Sports

TechBits: geocaching beyond GPS (11.27.13)

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BIRMINGHAM - AL -

Geocaching is going beyond just GPS.  More GPS receivers and even smart phones are now equipped with support for GLONASS.  The Russian satellite system gives more points for location, resulting in more reliable accuracy.

Some geocachers are also getting guidance from inside the caches themselves.  It's through a system called Chirp, developed by Garmin.  A wireless Chirp unit can be programmed to give Garmin GPS users extra hints or other information- and sometimes even details on the next stage in a multi-stage cache.  Because Chirp is unique to Garmin, people who place caches must give a way for users of other types of GPS units to get the same information.

The cache itself can even give you direction.  A reverse geocache is a cache you carry with you.  It tells you how far you are from 'ground zero'- the spot where you must be to open the cache.  You will have a limited number of tries to open it before it locks permanently.  Someone good with mapping logic could easily open the cache in as few as three tries.

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