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Th Kolibree toothbrush, the world's first Internet-connected toothbrush, is displayed “CES: Unveiled”, the media preview for International CES, at the Mandalay Bay Convention Center January 5, 2014 in Las Vegas, Nevada. The Kolibree toothbrush includes a sensor which detects how much tartar is being removed in a brushing. It also records brushing activity so users can maintain a consistent cleaning each time. The device conveys the information wirelessly to a smartphone app. (Photo by Robyn Beck/AFP Photo)
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