Don't Smile Challenge
Use your webcam for the ultimate poker-face test. MediaPipe Face Mesh tracks your mouth corners 60× per second — the moment a smile is detected, the clock stops. Compete with friends, share your score, and improve your deadpan delivery.
9k+ uses·Free
4.9 (0 ratings)
How to Use
1
Enable your camera
Click Start Camera and allow browser permissions.
2
Keep a straight face
The timer starts immediately — don't smile!
3
See how long you last
Your score is saved. Challenge friends to beat it.
Frequently Asked Questions
How does smile detection work?expand_more
MediaPipe Face Mesh maps 468 facial landmarks locally in your browser. We measure mouth-corner spread relative to face width to detect smiles — all processing stays on your device.
Is my video sent anywhere?expand_more
No. All processing runs 100% in your browser using WebAssembly. Nothing is uploaded.