Barnes & Noble Nook Color Mode D'Emploi

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Barnes & Noble NOOK Color User Guide 
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The Restrictions Settings screen.
4.  Tap the Restrictions menu choice. 
Your NOOK displays a keypad for setting up a 4-digit passcode you will enter whenever you want to disable or 
re-enable the Web browser. 
NOTE:  This passcode is independent of the Device lock passcode you can set up to protect your NOOK from 
being used by people who do not know the Device lock passcode. For more information about the 
Device lock passcode, see “Using a Device Lock Passcode to Protect Your NOOK””.