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unit 01 · fingerspelling · phase 2

Learn the alphabet with your hands.

Watch the hand form each letter, mirror it to your camera, and hold steady — the model verifies your sign without a single frame leaving your device.

Experimental — single-signer model. Trained on essentially one signer's hands. Expect it to work for some people and lighting, and be unreliable for others — weakest on M and N. A diverse, release-quality model is planned.

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letters learned
0
day streak
100 %
on-device
quick jump
target sign
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A
Tip: use the ← → arrow keys to move between letters
how to sign

“A”, step by step.

Make a fist. Rest your thumb along the side, against your index finger.

webcam tip

Keep your palm facing straight toward the webcam so it can see your thumb resting vertically against the side of your curled index finger.

cheat sheet — what your fingers should do
FingersCurled down tightly into the palm
ThumbResting straight against the side of the index finger
PalmFacing forward, toward the camera
tutorial

Study the shape first.

official textbook chart · letter “A”
A
01

Watch

Study the chart and the animated skeleton until you can picture the shape without looking.

02

Form

Make the shape slowly with the cheat sheet open — fingers, thumb, palm, in that order.

03

Hold

Show it to the camera below and hold steady until the bar fills. Then press Next.

practice

Now show me “A”.

everything runs locally on your device

Press “Start camera”. Everything runs on your device — nothing is uploaded, ever.

best guess
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confidence0%
hold steady0%
modelfingerspelling-v0 · experimental
tracking21 landmarks · 30fps
inferencein-browser · WASM
uploadszero, ever

The bar has to fill and hold. Demo mode passes any steady hand — useful when the experimental model struggles with your lighting.