The device uses 16 sensors to analyse a driver’s heart rate and skin conductance every two seconds. A bracelet that gives drivers electric shocks to stop them falling asleep at the wheel is to go on sale in the autumn. The device uses 16 sensors, similar to those used in police polygraph tests, to analyse the driver’s heart rate and skin conductance every two seconds. If heart rate is falling, which is a sign of drowsiness, the Steer bracelet sends a a “strong vibration” and a flash of yellow light. If the heart rate continues to fall despite the warning, the device will assume that the driver is about to fall asleep and will jolt them awake with a “gentle” electric shock.

Source: The Times July 28, 2017 15:56 UTC