A quarter of all accidents happen because of a driver falling asleep — even drowsy driving is nearly as dangerous as driving intoxicated and is responsible for 30,000 deaths a year. The Steer Wearable Driving Aid ensures you won't fall asleep driving ever again. It detects your drowsiness level by analyzing your heart rate and skin conductance every two seconds. If it thinks you're getting drowsy, it will first warn you with a vibration and yellow light, and if your heart rate drops further, it will jolt you back to consciousness with a gentle electric shock. Each charge of its battery lasts up to two weeks, so don't need to worry about it powering down unexpectedly, giving you added peace of mind on long drives.