The app works to prevent driving accidents.
Global Panorama CC-BY-SA
Global Panorama CC-BY-SA
The sensor senses for eye movement away from the road. If your eyes are away from the road, the sensor will beep. This also checks for red lights and if there is a red light or a stop sign the sensor will not beep. Also, if your car is stopped, the sensor will not beep.
Buy the sensor here