Huang's Blog

Ketsuin 結印

A web-based input method that lets you type with ninja hand signs, detected entirely in your browser.

Input12 classic ninja seals via webcam
DetectionYOLOX-Nano on ONNX Runtime WebAssembly, fully in-browser
PrivacyNo data leaves your device
Text engineT9 predictive engine maps seal sequences to text
Game modeChallenge mode with a global leaderboard
Websiteketsuin.clothpath.com

Ketsuin is a web-based input method that lets you type with ninja hand signs.

How it works

  1. Form one of the 12 classic seals in front of your webcam.
  2. A YOLOX-Nano model running on ONNX Runtime WebAssembly detects the sign entirely in your browser.
  3. A T9 predictive engine maps seal sequences to text.

Challenge mode

Race hand-seal sequences against a global leaderboard.

FAQ

Does my webcam video leave my device?

No. Hand-sign detection runs entirely in your browser on ONNX Runtime WebAssembly — no data leaves your device.

How do you type with hand signs?

Form one of the 12 classic seals in front of your webcam. A YOLOX-Nano model detects the sign, and a T9 predictive engine maps sign sequences to text.

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