Unit 1
Numbers
1 to 9. Mostly one hand, so it's the easiest place to start.
Indian Sign Language, checked live by your camera
Learn to sign, haath se.
Copy a sign from ISLRTC, hold it for one second, and Haath Se tells you if you got it right. No app, no special hardware, and your video never leaves your device.
- 65 ISL signs
- 3 game modes
- 0 video uploaded
1 hand
21 points tracked
Match
Why it matters
Over 50 lakh people in India have a hearing disability. How many people around them can say hello back?
The law is already there
The RPwD Act 2016 promises education in sign language, interpreters on TV, and teachers trained in ISL.
The people aren't, yet
Most hearing people have never learned a single sign. Learning resources are mostly videos with no feedback.
Haath Se closes the gap
Rights first, then practice with instant feedback, so a first sign takes minutes instead of a course.
How it works
From zero to your first sign in four steps
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Know the rights
Eight short cards on the RPwD Act, NEP 2020 and the UN Convention.
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Learn a sign
Watch it in the ISLRTC dictionary, then copy it in front of your camera.
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Hold for one second
The ring fills as your hands match. Each sign unlocks a fact about Deaf India.
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Race in Sign Rush
Pop rising bubbles by signing them, and climb the leaderboard.
What you learn
65 signs in three units, as ISLRTC teaches them
Unit 2
Alphabet
A to Z. Most ISL letters use both hands, and Haath Se tracks both.
Unit 3
30 everyday expressions
The words people need first, everywhere: greetings, help, food, family. Every country has its own sign language, so these are the ISL signs.
Rights come first
Before the first lesson, every learner reads this
Sign language in India isn't a favour or a hobby. It's written into law. Scroll through the eight provisions learners see first.
Plain-language summaries for awareness, not legal advice.
Inside Haath Se
How the camera understands your hands
Everything below runs in your browser, many times a second. Only hand-point numbers ever reach our server, and only when organisers record a sign.
1
Webcam
640 × 480 video, mirrored so it feels like a mirror.
2
MediaPipe
Finds 21 points on each hand, for up to two hands.
3
129 numbers
Points made relative to the wrist and scaled, so distance doesn't matter.
4
Nearest match
Compared with recorded examples. The 7 closest vote.
5
Steady sign
Must win 4 of the last 7 frames, then be held.
Questions
Good to know
Is my video uploaded anywhere?
No. Hand tracking and recognition run in your browser. The server only stores hand-point numbers recorded by organisers, small reference photos, and Sign Rush scores.
Is this a sign language translator?
No. Haath Se is a practice tool for hearing people learning their first ISL signs. Real conversations need fluent signers and qualified interpreters.
Where do the signs come from?
Numbers 1 to 9 and letters A to Z are built in, from an open ISL gesture chart (MIT licence) that we turned into hand-tracking data, so the camera can check them with no setup. The 30 expressions are built in too: we measured the hand movement from community ISL avatar clips and play it back as an animated figure, with no video copied. Every sign links to ISLRTC so you can check the official form.
Why can't it check moving signs?
Haath Se compares hand shapes, not motion. For signs that move, the camera checks the main hand shape, and ISLRTC shows you the movement.
Why "Deaf" and not "deaf and dumb"?
Many Deaf people use their voice, and "dumb" and "mute" are hurtful and inaccurate. The RPwD Act itself uses "deaf" and "hard of hearing".