They backed a yachting syndicate that competed in the America's Cup. (Their vessel, equipped with such Loomis-inspired gadgets as a custom-designed wind tracker, came in dead last.) They acquired most of Hilton Head Island, S.C. for use as their private playground.

FORBES: The Alchemist

My BodyMedia armband is both a tracker and a motivator, as I strive to rack up active minutes each day, which, given my current schedule, can be challenging.

FORBES: On The Cover/Top Stories

Products like ZEO and Fitbit have been the darlings of the industry for a long time yet there are several others such as the Withings Smart Activity Tracker and the The BodyMedia CORE 2 tracking band.

FORBES: By Jules Pieri, Co-Founder Daily Grommet

Shopper Tracker and its peers will turn out to be a gift to buyers as much as to sellers.

WSJ: Spying on Your Buying | Marvels