US Patent 11421445 Smart lock device with near field communication

An intelligent door lock system is coupled to a door at a dwelling. A door status device is at the dwelling. The door status device is coupled to a drive shaft of a lock device to assist in locking and unlocking a lock of a lock device at the door. The lock device is coupled to the door status device and includes a bolt. Near field communication (NFC) is used to identify a lock device via an RF protocol. An engine, an energy source and a memory are coupled together. A camera is coupled to or part of the intelligent door lock system. The camera is configured to record in response to door lock status.