[veemjeem]

Probably not NFC though. You need a much smaller distance to read NFC (or a much bigger antenna). I doubt it could read a NFC keycard through the thickness of the door. I'm sure all that metal in the lock would act as a great RF shield too. It uses more power than BT4, and all devices that have NFC also have BT4 so it probably wouldn't make sense to power both.

[bradtgmurray]

They have an external NFC tag that you can place near your front door that triggers the app on your phone to unlock your door through the web.