A gadget to track every calorie you burn

After falling in love with the Nintendo Wii's physically demanding sports games, serial entrepreneur James Park, 32, started to ponder other ways to combine video games and fitness. The result: a $99 lipstick-size gadget that clips on to your clothes and uses a motion sensor to track everything from steps taken to sleep patterns and calories burned.

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[Source: Financial news of the day - CNNMoney.com]