I know that JARVIS in Iron Man was an AI, but actually when I watched Iron Man, I was particularly impressed with just how well integrated the voice system was

I know that JARVIS in Iron Man was an AI, but actually when I watched Iron Man, I was particularly impressed with just how well integrated the voice system was and how if a startup put their mind to it, they probably could achieve something close with todays technology: A house wide audio system that recorded all speech, fingerprinting it so that the speaker was identified and transcribing it so that it was searchable. Add to that a SIRI-like system that you can interact with naturally from any room in your house, and you already have something very interesting. Just think about how useful it would be for solving domestic disputes: "Jarvis, did I agree to buy the milk yesterday?", "Could not find any conversations involving you and 'milk' yesterday." :-)