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Siemens has developed a sweet little wearable, Bluetooth-based badge that lets you speak commands to control your house, talk to others in your house and accept and conduct phone calls. For all intents and purposes, lest any of you be confused, this is life imitating art in the finest sense. The system can recognize 30,000 words once you press the button on the badge to activate it. I'd give it no more than 10 years before this sort of technology trickles down into the middle class, but I hope to see it sooner than that. Now, if only the system would give feedback in Majel Roddenberry's voice...

Wearable hub for communications in the home [WMMNA]
Com-Badge [Siemens]