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"Glass users are all too familiar with the battery of commands required to get the headwear to spring into action. Beginning today, two of those lines are available in the Google Search for Android app. If you say \"Okay Google\" followed by \"take a photo,\" your device will launch the camera app. Similarly, \"take a video\" accomplishes the same, albeit it in movie mode. Of course, we prefer to speak into a smartphone only when absolutely necessary, and with plenty of other methods for launching into photo mode (including, of course, simply tapping the camera icon), this is a feature we don't plan to use anytime soon."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2014/03/19/google-voice-commands/>