Biometric sensors are getting lighter, cheaper and more accurate, and could help warn drivers before they become too fatigued, reports The New York Times.
New wearable technology monitors the drivers but in a more subtle way, and comes in a variety of forms including caps, vests, wristbands and eye wear.
Glasses made by Optalert measure the driver’s eye blinking with an LED light monitor. Eyelids that stay down too long might point to a sleepy driver. The real-time measurements are displayed on a dash-mounted device with alarms and notifications.