Ball bearing hinge

1. Two-step authentication: Open the door by combining two identification methods (password, fingerprint, card or face recognition) to increase security.
2. Passage Mode: Put the lock in a temporary open state for a specified period of time without the need for authentication.
3. Child Lock: Restricts the door from opening from the inside when activated to prevent children or unauthorized persons from leaving.
4. Human body recognition sensor: A sensor that detects the presence or movement of people, enabling faster and contactless entry.
5. Palm Vein Recognition: Accurate and unforgeable security by identifying the pattern of palm veins.
6. Finger Vein Recognition: Unforgeable and secure identity by identifying the pattern of finger veins.
7. Deadbolt lock: An internal lock with a simple lever that prevents the door from being opened from the outside but can be easily opened from the inside.
8. One-time password (OTP): A time-limited, one-time-use temporary code for temporary, secure access.