For your next golf tournament
could come in handy. According to the Web site, it doesn't track anything in the ball itself, which would be a no-no. It uses a bunch of other digital video and color recognition technologies to find missing golf balls. As long as three dimples-worth of ball are visible, it'll find it, they say.
Then there's a motion-sickness-prevention watch, which could come in handy on cruises, if you have some folks who don't do too well at sea. Though I hear those bracelets work pretty well too, and don 't require any electric shocks to keep your brain fooled into thinking you're not actual moving.