Can your door make decisions on its own about who to admit to your home? It can if it's equipped with Chui, the intelligent doorbell. This system, currently in development. can scan the face of the person at the door, compare it to a list of people you know, and either play an audio message for them or unlock the door. We talked to the team behind Chui to find out how our doors will be locked (and opened) in the near future.