Picking Up 'Skull Vibrations'? Could Be XR Headset Authentication

A Rutgers-led team introduced VitalID, a passive software-based biometric authentication for XR headsets that identifies users via skull vibration harmonics captured by built-in motion sensors; the article describes how the system extracts harmonic frequency features, uses adaptive filtering and deep learning for continuous reauthentication, notes a patent/licensing effort, and includes expert views that position VitalID as a complementary continuity signal for XR sessions rather than a replacement for established authentication methods like FIDO and passkeys.