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A Mombrush system by Xiusolution of Korea is displayed during the 2014 International Consumer Electronics Show (CES) in Las Vegas, Jan. 8, 2014. The wireless device attaches to a toothbrush and uses a smartphone app to encourage proper brushing behavior.

Steve Marcus

A Mombrush system by Xiusolution of Korea is displayed during the 2014 International Consumer Electronics Show (CES) in Las Vegas, Jan. 8, 2014. The wireless device attaches to a toothbrush and uses a smartphone app to encourage proper brushing behavior.