Check out Lockitron! (https://lockitron.com) - we come with an API, no monthly fee, and a variety of locks that will work on most doors or apartment buzzer systems.
A keypad backup is a very desirable feature to me. Possibly to lots of others too, I would think.
Check out Lockitron! (https://lockitron.com) - we come with an API, no monthly fee, and a variety of locks that will work on most doors or apartment buzzer systems.