Oral-B's new smart toothbrush tracks movement with your phone
 

Oral-B debuted its Smart Series of connected toothbrushes last year, and at Mobile World Congress 2016, the company announced a new model. The Oral-B Genius touts Position Detection tech that uses motion sensors and your phone's camera to track your...

http://www.engadget.com/2016/02/22/o...rt-toothbrush/