The kind of technology used to authenticate a user's identity without a password is called biometrics. Biometric systems utilize unique physiological traits, such as fingerprints, facial recognition, or voice patterns, to verify identity. This method enhances security by reducing the likelihood of unauthorized access, as biometric data is inherently difficult to replicate or steal. Users typically find biometric authentication to be faster and more convenient than traditional password-based systems, streamlining access to devices and services.