Mature technology using non mechanical key as user identification ID, such as:
Fingerprint lock, iris recognition access control (biometric, high security, no loss and damage; but inconvenient to configure, high cost).
Magnetic card, radio frequency card (non-contact, high security, plastic material, easy to configure and carry, low price).
TM card (contact type, high security, stainless steel material, configuration, portability, low price).
It refers to the more intelligent lock in terms of user identification, security and management, which is different from the traditional mechanical lock.