Smart lock systems and methods

A method of operating a door lock system coupled to a building, the door lock system comprising a door lock movable between a locked state and an unlocked state, the method comprising:

• detecting, with the door lock, an indication suggestive of a first identity trait of a visitor;
• receiving, with the door lock, an audible message from the visitor, the audible message comprising an identity attribute suggestive of a second identity trait of the visitor;
• and
• determining, with the door lock system, whether the first identity trait and the second identity trait substantially match an identity of an authorized visitor who is permitted access to the building.

A door lock system for securing a building door, wherein the door lock system determines whether an identity of a visitor substantially matches an identity of an authorized visitor who is permitted access to a building, the system comprising:

• an outer housing configured to attach to the building door;
• a door lock configured to move between a locked state and an unlocked state, wherein the door lock is at least partially enclosed by the outer housing;
• a visitor detection system coupled to the outer housing, wherein the visitor detection system comprises a camera assembly and a motion detector assembly;
• and
• a visitor communication system coupled to the outer housing, wherein the visitor communication system comprises a microphone and a speaker.