Live Hand Tracking
MediaPipe tracks 21 landmarks on your hand at video speed and draws the skeleton over your feed, so you can see exactly what the coach sees.
21 landmarks · on-device
Signa watches your hands in real time and tells you exactly how to improve — no instructor needed.
Start Practicing — It's FreeNo account needed. Works in your browser. Video never leaves your device.
Every card below is live in the app — tracking, scoring, coaching and progress, all on-device.
MediaPipe tracks 21 landmarks on your hand at video speed and draws the skeleton over your feed, so you can see exactly what the coach sees.
The full alphabet in five unlockable modules — from your first five signs to the genuinely tricky ones.
One short session a day keeps the flame alive. Tap any day to see what you practiced.
One precise tip at a time — always your weakest point first. Fix it, and the next tip appears.
Your coach reacts to every attempt — thinking, encouraging, celebrating right along with you.
Green means mastered (90%+ twice), yellow means learning. Quizzes from memory unlock each next module.
No install. No account. No uploads. Just open the page, allow your camera, and sign. Your progress lives on your device.
Open the boothOpen Signa in your browser and allow the camera. Nothing to install, nothing leaves your device.
Follow Siggy's animated guide hand, step by step, side by side with your own camera feed.
See a live score per finger, fix one tip at a time, earn stars, mastery and your daily streak.
Your first five signs take about two minutes.
Open Signa FreeNo account. No download. Just your hands.