Ketsuin 結印 – Real-time Naruto hand sign typing in your browser

Summary: Ketsuin uses your webcam to recognize Naruto-inspired hand gestures and convert them into text instantly, all running in-browser without downloads. It includes a Jutsu Release Challenge Mode with a leaderboard for speed-based gesture sequences.

What it does

Ketsuin captures hand gestures via webcam and translates them into text in real time within the browser. It features a challenge mode to compete on performing correct seal sequences quickly.

Who it's for

Users interested in gesture-based typing or Naruto-themed interactive experiences.

Why it matters

It enables hands-free text input using hand signs without additional software, adding a gamified challenge for speed and accuracy.