Keystroke Biometric Auth-Risk Demo

Type the phrase below exactly as shown. Real key-press timing (dwell = how long each key is held, flight = the gap before the next key) is captured to build your own typing-rhythm profile, then a later retype is scored against it. This is the real, published keystroke-dynamics technique behavioral-biometric systems use — a scaled Manhattan distance classifier over dwell/flight timing.

Nothing is typed content-sensitive here — only timing between real key presses is measured. Everything runs in your browser; nothing is sent anywhere.