How to set up Touch ID on my Apple iPhone 6
You can unlock your Apple iPhone 6 from standby using the fingerprint scanner. You can also use it to authorize purchases from the iTunes Store, App Store, and iBooks Store.
1. Touch Settings.
2. Touch Touch ID & Passcode.
3. Touch Add a Fingerprint…
4. Read the message and touch the Home key to continue.
5. Lift and place your finger on the home key repeatedly until the fingerprint turns red.
6. Read the message and touch Continue.
7. Lift and place your finger on the home key repeatedly until the fingerprint turns red.
8. Touch Continue.
9. Enter a six-digit passcode to use in case Touch ID can't unlock the phone.
10. Re-enter the six-digit passcode.
11. Touch ID has been set.