Google's Google TV software, available on set-top boxes and TVs from the likes of Sony, Samsung, LG and Vizio, includes a feature to search the Web using voice commands spoken into a Google TV app found on handsets running Google's Android operating system or Apple's iPhone.
At the 2012 Consumer Electronics Show in Las Vegas this January, Samsung and LG showed off motion-sensing remote controls that feature built-in microphones for voice search that will arrive in stores later this year. But for now, Google's voice input is limited to searching the Web and not changing the channel. But that, too, is likely to change soon.
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