A smart door lock may include latch mechanism for locking and unlocking doors; authorization module for authorizing or de-authorizing authority of mechanical key for opening latch mechanism; the mechanical key for inserting into the latch mechanism for unlocking after authorized by the authorization module. Thanks to the structure of smart door lock, there is no need to carry the mechanical key all the time.

A lock core for a lock assembly is provided including a housing having a first end. An operating member is configured to move between a retracted position and an extended position. When the operating member is in the retracted position, the operating member is at least partially recessed within the housing. A control member is arranged within the housing and is configured to selectively limit movement of the operating member between the retracted position and the extended position. The control member is operably coupled to the controller via an actuator.

An exemplary system includes a mechanical key and an access control device. The access control device includes a housing defining a keyway that has a fixed position within the housing. The access control device further includes a root depth sensor assembly, an insertion depth sensor assembly, a control assembly in communication with the sensor assemblies, and an electronic lock device. The control assembly is configured to determine the bitting code of the mechanical key based upon information received from the sensor assemblies, to compare the bitting code of the mechanical key to a lock/unlock bitting code; and to transmit a lock/unlock command in response to the bitting code matching the lock/unlock bitting code. The electronic lock device is configured to transition between a locked state and an unlocked state in response to receiving the lock/unlock command and without requiring rotation of the mechanical key.

An exemplary system includes a mechanical key and an access control device. The access control device includes a housing defining a keyway that has a fixed position within the housing. The access control device further includes a root depth sensor assembly, an insertion depth sensor assembly, a control assembly in communication with the sensor assemblies, and an electronic lock device. The control assembly is configured to determine the bitting code of the mechanical key based upon information received from the sensor assemblies, to compare the bitting code of the mechanical key to a lock/unlock bitting code; and to transmit a lock/unlock command in response to the bitting code matching the lock/unlock bitting code. The electronic lock device is configured to transition between a locked state and an unlocked state in response to receiving the lock/unlock command and without requiring rotation of the mechanical key.