Face the camera
Keep both eyes and the full face visible. Avoid extreme side angles and do not cover the eyebrow or eye region.
Use stable placement
Mount or rest the device so it does not move. Never adjust a device while driving.
Control lighting
Use even front lighting and avoid a bright window directly behind you. Remove heavily tinted glasses when safe and practical.
Test first
Confirm the live eye-open signal changes naturally, then use the test alarm before relying on a session.
Written by the EyeJolt Editorial Team. Published and last reviewed 2026-07-14. Editorial policy.