for iOS 9.1 software

Note: If you turn iPhone off after setting up the Touch ID sensor, you’ll
be asked to confirm your passcode when you turn iPhone back on and
unlock it the first time. You’ll also be asked for your Apple ID password
for the first purchase you make in the iTunes Store, App Store, or
iBooks Store.
Delete a fingerprint. Tap the fingerprint, then tap Delete Fingerprint. If
you have more than one fingerprint, place a finger on the Home button to
find out which fingerprint it is.
Name a fingerprint. Tap the fingerprint, then enter a name, such as
“Thumb.”
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 purchases with
your fingerprint. Or go to Settings > Touch ID & Passcode, then turn on
iTunes & App Store.
Use Touch ID for Apple Pay. (iPhone 6, iPhone 6 Plus, and later) Go to
Settings > Touch ID & Passcode to ensure that Apple Pay is enabled
with your Touch ID. For more information, see .
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
Apple Pay