Detection
Ask what signal is measured: scheduled inactivity, camera-visible eyes, head position, wearable motion, or vehicle behaviour. Each has blind spots.
Eye closure and head movement each provide partial evidence. Combining signals can reduce some errors, but neither proves or excludes microsleep.
Ask what signal is measured: scheduled inactivity, camera-visible eyes, head position, wearable motion, or vehicle behaviour. Each has blind spots.
Check whether frames or biometric data leave the device, whether an account is required, and whether monitoring continues when another app is in front.
Compare test alarms, sound randomisation, haptics, custom recordings, sensitivity controls, and a clear way to acknowledge or stop an alert.
Prefer products that publish limitations and do not claim to make fatigued driving safe. Built-in vehicle systems should be used according to the manufacturer’s instructions.
Written by the EyeJolt Editorial Team. Published and last reviewed 2026-07-14. Editorial policy.