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On-Device Face Tracking

Glare & Reflection Detector

Scans the eye region of your face for specular hotspots — bright reflected points caused by glasses, skin, or a nearby screen — and flags where they are. Named for the common case, built for the general one: there is no dedicated glasses-detection model here, so this reports exactly what it measures rather than a specific cause it cannot actually verify.

Camera off

Readout

Glare & Reflection Detection Results

Click Start and sit facing the camera as you normally would for a call.

  • Overall:—
  • Left eye (camera view):—
  • Right eye (camera view):—

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Notes

What counts as a hotspot

The eye region in each frame is compared against its own local brightness average — a point is flagged only when it is both very bright in absolute terms and standing out sharply from its immediate surroundings, which is what a specular reflection actually looks like versus normal skin or eye brightness. The boxes drawn over your video mark exactly where each eye region was analysed, colored green when clear and red when a hotspot is found.

Fixing glare, roughly in order of effort

Move the light off-axisThe single biggest fix. A light positioned right next to the camera lens reflects straight back into it — even a small angle change breaks that.
Raise the light above eye levelReflections off glasses lenses are very angle-sensitive; light from slightly above tends to reflect up and away from the camera rather than straight back.
Add diffusionA diffuser panel or even sheer fabric over a light softens a hard specular point into a much less noticeable soft glow.
Tilt your head or glasses very slightlyOften enough on its own to break a direct reflection angle without touching your lighting setup at all.

Benchmark Reference

Verdict Thresholds at a Glance

GradeHotspot ratioWhat it means
Clear≤ 0.05No significant glare detected.
Mild0.05 – 0.12Small reflection visible, unlikely to bother viewers.
Significant> 0.12Real glare in at least one eye — worth adjusting lighting.

These are this tool's own real thresholds, comparing eye-region brightness against its own local average live.

Step-by-Step

How to Run the Test

  1. Click "Start" and allow camera access when prompted.
  2. Sit in your normal call position under your usual lighting, wearing glasses if you normally do.
  3. Watch the eye-region boxes — green means clear, red flags a detected hotspot.
  4. Adjust your light angle and watch the verdict update live.

Common Questions

Frequently Asked Questions

Does this only detect glare on glasses?
No — it scans the eye region for bright hotspots regardless of the cause, which includes glasses reflections but also skin glare, a wet-look under-eye area, or a screen reflecting directly in the eye itself. There is no dedicated glasses-detection model here, so the tool reports what it actually measures rather than a specific cause it cannot verify.
How do I stop glasses glare on a video call?
Angle your main light slightly up and off to the side rather than straight at your face — direct on-axis light is the most common cause of a clean reflection straight back into the camera. Adding a diffuser, or simply tilting your glasses or head very slightly, often clears it without any relighting at all.
Why is my ring light causing glare?
A ring light positioned close to and centered on the camera lens is almost purpose-built to reflect straight back into glasses lenses — the classic visible ring-shaped glint. Moving it slightly off-axis, or raising it above eye level, usually breaks the direct reflection angle.
Does this send my video anywhere?
No. Face tracking and the glare analysis both run entirely on your device — no image or video data is ever transmitted.
Why does it say "no face detected"?
Make sure your face is clearly in frame and reasonably lit — the model needs a basic view of your face to locate your eyes before it can analyze them for hotspots.