Kevin McCloud, the star of the U.K. TV show "Grand Designs," says today's advancements in consumer electronics mean that the smart home doesn't just have to be about top-notch entertainment anymore. "I like the idea of home automation and systems that run so that they serve a useful purpose. For example -- a system that tells me how much energy I'm using so that if I've left the lights on or left a window open, it will tell me. I think we're moving to the point now where home automation isn't just about home entertainment."

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