We get there with robots. You have one personal assistant, or call it whatever you like, where you program your references and it’s the only programming device in your house. It handles the appliances which could be as dumb as they are today and we have a single point of failure security-wise. We don’t need Internet-connected fridges, and TV’s, and thermostats and all that crap. This is a future that has been envisioned decades ago by sci-fi authors. Perhaps it’s time to start making it a reality.