Mobile World Congress is predominantly about smartphones, however look hard enough and you'll find all sorts of other surprises too. Take Oral-B, which chose Barcelona as the place to announce the B-Genius, a new toothbrush that knows exactly where y...from Engadget RSS Feed http://www.engadget.com/2016/02/27/scrubbing-with-a-toothbrush-that-knows-the-spots-youve-miss/
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