Vehicles of the future may keep an eye on their drivers, rousing you if you start to nod off, thanks to new technology that can scan your face for signs of drowsiness. It uses two cameras built into the dashboard to identify key points on your face (it's unfazed by sunglasses or a head turned to one side), creating a 3D picture that it compares to a computer model.By analyzing the movement of your head, the rate you blink and the angle of your gaze, it monitors progressive drowsiness. If you're in danger of falling asleep, the system could trigger alarms or a flashing red light - which could refuse to stop until the car did. If the system works and it adopted by the industry, it could have save thousands of live lost around the world each year from falling asleep at the wheel.
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