User guide

Chapter 3 Basics 32
Turn Location Services on or o. Go to Settings > Privacy > Location Services. You can turn it o
for some or for all apps and services. If you turn o Location Services, you’re prompted to turn it
on again the next time an app or service tries to use it.
Turn Location Services o for system services. Several system services, such as location-based iAds,
use Location Services. To see their status, turn them on or o, or show in the menu bar when
these services use your location, go to Settings > Privacy > Location Services > System Services.
Turn o access to private information. Go to Settings > Privacy. You can see which apps and
features have requested and been granted access to the following information:
•
Contacts
•
Calendar
•
Reminders
•
Photos
•
Bluetooth Sharing
•
Microphone
•
Twitter
•
Facebook
You can turn o each app’s access to each category of information. Review the terms and privacy
policy for each third-party app to understand how it uses the data it’s requesting.
Security
Security features help protect the information on your iPod touch from being accessed by others.
Use a passcode with data protection
For better security, you can set a passcode that must be entered each time you turn on or wake
up iPod touch.
Set a passcode. Go to Settings > Passcode and set a 4-digit passcode.
Setting a passcode turns on data protection, using your passcode as a key to encrypt Mail
messages and attachments stored on iPod touch, using 256-bit AES encryption. (Other apps may
also use data protection.)
Increase security. Turn o Simple Passcode and use a longer passcode. To enter a passcode that’s
a combination of numbers and letters, you use the keyboard. If you prefer to unlock iPod touch
using the numeric keypad, set up a longer passcode using numbers only.
Allow access to features when iPod touch is locked. Go to Settings > Passcode. Optional
features include:
•
Siri (if enabled; see Siri settings on page 37)
•
Passbook (see Chapter 24, Passbook, on page 95)
•
Reply with Message (see Make and answer calls on page 58)
Allow access to Control Center when iPod touch is locked. Go to Settings > Control Center. See
Control Center on page 27.
Erase data after ten failed passcode attempts. Go to Settings > Passcode and tap Erase Data.
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.
If you forget your passcode, you must restore the iPod touch software. See Restore iPod touch on
page 139.