Apple iPod touch iOS 4.3 - Manual (Page 161)

Important: On iPod touch 3rd generation, you must also restore iOS software to
enable data protection. See “Restoring iPod touch” on page 217.
Set a passcode: Choose General > Passcode Lock and enter a 4-digit passcode,
then enter the passcode again to verify it. iPod touch then requires you to enter the
passcode to unlock it or to display the passcode lock settings.
Turn passcode lock off: Choose General > Passcode Lock, enter your passcode,
and tap Turn Passcode Off, then enter your passcode again.
Change the passcode: Choose General > Passcode Lock, enter your passcode,
and tap Change Passcode. Enter your passcode again, then enter and reenter your
new passcode.
If you forget your passcode, you must restore the iPod touch software. See “Updating
and Restoring iPod touch Software” on page 216.
Set how long before your passcode is required: Choose General > Passcode Lock and
enter your passcode. Tap Require Passcode, then select how long iPod touch can be
locked before you need to enter a passcode to unlock it.
Turn Simple Passcode on or off: Choose General > Passcode Lock, then turn Simple
Passcode on or off.
A simple passcode is a four-digit number. To increase security, turn off Simple Passcode
and use a longer passcode with a combination of numbers, letters, punctuation, and
special characters.
Erase data after ten failed passcode attempts: Choose General > Passcode Lock,
enter your passcode, and tap Erase Data to turn it on.
After ten failed passcode attempts, all settings are reset, and all your information and
media are erased by removing the encryption key to the data (which is encrypted
using 256-bit AES encryption).
Restrictions
You can set restrictions for the use of some apps and for iPod content on iPod touch.
For example, parents can restrict explicit music from being seen on playlists, or turn off
YouTube access entirely.
Turn on restrictions:
1 Choose General > Restrictions, then tap Enable Restrictions.
2 Enter a four-digit passcode.
3 Reenter the passcode.
Turn off restrictions: Choose General > Restrictions, then enter the passcode. Tap
Disable Restrictions, then reenter the passcode.
Important: If you forget your passcode, you must restore the iPod touch software from
iTunes. See “Updating and Restoring iPod touch Software” on page 216.
161 Chapter 23 Settings