Some embodiments include a computer server. The computer server can be configured to: add a security system associated with a user account; provision one or more communication devices associated with the security system; configure a cryptographic key to associate at least a communication device amongst the communication devices with the security system; configure an access control file that is cryptographically signed by the computer server and encrypted with the cryptographic key associated with the security system, wherein the access control file contains permissions of the communication devices to the security system; and provide a data payload including the access control file to a first communication device of the communication devices.

A device for preventing unwanted opening of a locked enclosure includes a lock bolt moveable between a locked position and an unlocked position. A face gear is meshable with and rotatable by the worm gear between locking and unlocking positions when the worm gear is driven in the first and second directions, respectively. A blocker member is rotatable between first and second positions. A biasing member is operatively coupled to the face gear and the blocker member to bias the blocker member in a biasing direction. A sliding member selectively disengages the blocker member to allow the blocker member to rotate in the biasing direction. A lever arm is operatively coupled to the sliding member such that the lever arm is in the disengaged and engageable positions when the sliding member engages the blocker member in the first and second positions, respectively.

A device for preventing unwanted opening of a locked enclosure includes a lock bolt moveable between a locked position and an unlocked position. A face gear is meshable with and rotatable by the worm gear between locking and unlocking positions when the worm gear is driven in the first and second directions, respectively. A blocker member is rotatable between first and second positions. A biasing member is operatively coupled to the face gear and the blocker member to bias the blocker member in a biasing direction. A sliding member selectively disengages the blocker member to allow the blocker member to rotate in the biasing direction. A lever arm is operatively coupled to the sliding member such that the lever arm is in the disengaged and engageable positions when the sliding member engages the blocker member in the first and second positions, respectively.

An electronic lock with power failure control circuit includes a lock mechanism having a latchbolt movable between extended and retracted positions and an electrically powered lock actuator to lock and unlock the latchbolt. The power failure control circuit includes a microcontroller and the lock is connected to a primary power source and an auxiliary power source, preferably supercapacitors and charger that can be turned on by the microcontroller and off when the charger signals a full charge. A power monitor circuit detects low voltage on the primary power supply and sets a power failure interrupt causing the microcontroller to execute power failure instructions that control the actuator so that the lock is placed into a desired locked or unlocked final state during the power failure. Upon detection of the return of good power, the system resets the lock.

Disclosed are various embodiments of lock devices, systems, and methods. A lock of the application can include an internal mechanism to permit backdriven operation and lost motion operation. In one form the lock can be made from an assembly of parts that have locating features that require one way installation/assembly. The lock can include an internal power source capable of driving electronics used to determine handedness of a door.

Lock devices, systems, and methods that can include an internal mechanism to permit backdriven operation and lost motion operation. In one form the lock includes an assembly of parts that includes parts having locating features that that can assist in those parts being assembled with other parts of the assembly in a single, relative orientation. Further, lost motion may be utilized to accommodate manual displacement of one or more components of the can also be displaceable, in at least certain situations, via operation of a motor. The lock can also include an internal power source capable of driving electronics used to determine handedness of a door.

Some embodiments include a computer server. The computer server can be configured to: add a security system associated with a user account; provision one or more communication devices associated with the security system; configure a cryptographic key to associate at least a communication device amongst the communication devices with the security system; configure an access control file that is cryptographically signed by the computer server and encrypted with the cryptographic key associated with the security system, wherein the access control file contains permissions of the communication devices to the security system; and provide a data payload including the access control file to a first communication device of the communication devices.

Lock devices, systems, and methods that can include an internal mechanism to permit backdriven operation and lost motion operation. In one form the lock includes an assembly of parts that includes parts having locating features that can assist in those parts being assembled with other parts of the assembly in a single, relative orientation. Further, lost motion may be utilized to accommodate manual displacement of one or more components that can also be displaceable, in at least certain situations, via operation of a motor. The lock can also include an internal power source capable of driving electronics used to determine handedness of a door.

Lock devices, systems, and methods including an internal mechanism to permit backdriven operation and lost motion operation. In one form, the lock includes an assembly of parts with locating features that assist in those parts being assembled with other parts of the assembly in a single, relative orientation. Further, lost motion may be utilized to accommodate manual displacement of one or more components that can also be displaceable, in some embodiments, via operation of a motor. The lock can also include an internal power source capable of driving electronics used to determine handedness of a door.

A lock for retrofitting onto a drawer or a door includes a drawer having a front panel. The drawer slidingly engages an item of furniture having a front face that is positioned above the front panel when the drawer is closed. A bracket has a vertically disposed flat front plate, a horizontally disposed flat top plate, a vertically disposed fiat back plate, and a horizontally disposed motor platform that extends horizontally into an interior of the drawer. A motor having an output shaft is mounted on the motor platform. A latch supported by the motor platform is engaged by the output shaft. The latch is retracted when the drawer is unlocked and is extended to engage an interior side of the front panel of the furniture item when the drawer is locked.