We've come a long, long way since the days when smart wristwear did little more than track your footsteps. Need proof? Smash has unveiled a wearable dedicated to tennis. The wristband uses motion sensors to track many aspects of your swing, ranging...via Engadget RSS Feed http://www.engadget.com/2014/05/28/smash-tennis-wristband/?ncid=rss_truncated
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