User Guide

Chapter 3 Basics 43
Note: 





Use the Touch ID sensor to unlock iPhone. 
in Settings. You can unlock iPhone from either the Lock screen or the Passcode screen.
Use the Touch ID sensor to make a payment in the iTunes Store, App Store, or iBooks Store.
When purchasing from the iTunes Store, App Store, or iBooks Store, follow the prompts to enable

App Store.
Use Touch ID for Apple Pay. (iPhone 6 or iPhone 6 Plus) Go to Settings > Touch ID & Passcode
to ensure that Apple Pay is enabled with your Touch ID. For more information see Apple Pay on
page 12 4 .
iCloud Keychain
iCloud Keychain keeps your Safari website user names and passwords, credit card information,
and Wi-Fi network information up to date. iCloud Keychain works on all your approved devices
(iOS 7 or later) and Mac computers (OS X Mavericks or later).
iCloud Keychain works with Safari Password Generator and AutoFill. When you’re setting up a
new account, Safari Password Generator suggests unique, hard-to-guess passwords. You can use
AutoFill to have iPhone enter your user name and password info, making login easy. See Fill in
forms on page 63.
Note: Some websites do not support AutoFill.
iCloud Keychain is secured with 256-bit AES encryption during storage and transmission, and
cannot be read by Apple.
Set up iCloud Keychain. Go to Settings > iCloud > Keychain. Turn on iCloud Keychain, then
follow the onscreen instructions. If you’ve set up iCloud Keychain on other devices, you need to
approve use of iCloud Keychain from one of those devices, or use your iCloud Security Code.
Important: If you forget your iCloud Security Code, you’ll have to start over and set up your
iCloud Keychain again.
Set up AutoFill. Go to Settings > Safari > Passwords & AutoFill. Make sure Names and Passwords,
and Credit Cards, are turned on (they’re on by default). To add credit card info, tap Saved
Credit Cards.
The security code for your credit card is not saved—you have to enter that manually.


To protect your personal information, set a passcode if you turn on iCloud Keychain and AutoFill.
Limit Ad Tracking
Restrict or reset Ad Tracking. Go to Settings > Privacy > Advertising. Turn on Limit Ad Tracking to

Advertising & Privacy.