Asus Nexus 7 Manual Book page 41

Next, speak the terms to search for or the Voice Action to per-
form. For more details on Voice Actions, see "use Voice Actions"
on page 37
The ability to trigger a search or action by saying "Google" is
called hotword detection. To turn it off or on, start from the
Google Now screen and touch Menu > Settings > Voice > Hotword
detection.
IMPorTAnT: To detect when you say "Google" to launch
Voice search or Voice Actions, Google analyzes sound
picked up by your tablet's microphone in intervals of a few
seconds or less. The sound is immediately discarded after
analysis and is not stored on the device or sent to Google
servers.
For more information about Voice Actions, see "use Voice Ac-
tions" on page 37 and"Voice Actions commands" on page
38.
Search by typing
Type your query in the search box on the Home screen or Google
Now card, or in Google Chrome's omnibox.
As you type, suggestions appear below the search box.
The first few suggestions attempt to complete what you're typing:
• To search for a suggestion immediately, touch it.
• To search for the contents of the search field, touch the Search
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