Oral-B's Bluetooth connected device called SmartSeries costs $160.
The brush tells you to move to a new quadrant of your mouth every 30 seconds to accomplish the recommended two minutes a day brushing time.
The app tells you if your brushing too hard while distracting you with news headlines, weather forecasts, appointments and fun facts about brushing your teeth.
If you do the full two minutes you're rewarded with a smiley face.
And then reminded to floss.
Being bossed around by your toothbrush is one of the things that makes the IoT revolution so exciting.