Most handheld gadgets, by nature, are meant for individual use.  And they usually don't involved much physical activity.
     But one pastime growing in popularity combines diverse skills such as exploring, problem-solving, and basic technological know-how.
     TV 20's "Gadgetologist," Dave Stanton of smartmediacreative.com, tells TV 20's David Snyder how "geo- caching" is catching on in a big way in North Central Florida.