Fitness Trackers Become Useful
Last year, fitness trackers — those devices you wear to monitor your steps, heartbeat, and sleep patterns – exploded onto the market. But in 2014, they actually became useful. Manufacturers raised the bar by offering wearables with GPS, heart-rate monitors, and even a caller ID function that syncs with your smart phone. With Apple entering the market, expect even more changes in 2015.
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