iPod nano, iPod nano (Second Generation), iPod nano (4th generation), iPod nano (5th generation), and Fifth Generation iPod (also known as iPod with video) include Screen Lock, which allows you to set a 4-digit combination to prevent someone else from using your iPod while it is not attached to a computer. When an iPod is locked, you must enter the combination to unlock the screen. This feature is different from the Hold switch in that the Hold switch only prevents iPod from turning on accidentally—not keeping snoops out.

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iPod: How to use the Screen Lock

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