Apple iPod touch iOS 2.2 - Manual (Page 94)

Turn Location Services on or off: Choose General > Location Services and turn
location services on or off.
To conserve battery life, turn Location Services off when you’re not using it.
Auto-Lock
Locking iPod touch turns off the display to save your battery and to prevent
unintended operation of iPod touch.
Set the amount of time before iPod touch locks: Choose General > Auto-Lock and
choose a time.
Passcode Lock
By default, iPod touch doesn’t require you to enter a passcode to unlock it.
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 111.
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
idle before you need to enter a passcode to unlock it.
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, your settings are reset to their defaults and all your
information and media on your iPod touch is removed by overwriting the data stored
on iPod touch.
Important: You can’t use iPod touch while data is being overwritten. This can take one
to four hours or more, depending on the storage capacity of your iPod touch.
94 Chapter 8 Settings