How to Set Up Touch ID

Method 1 of 2:

iPhone and iPad

Go to "Settings" > "Touch ID and Passcode".
Enter your passcode if prompted.
Tap on "Add fingerprint". You can have up to five fingerprints stored.
Tap "Continue".
Scan your fingerprint.
Capture the edges as instructed. You may have to rotate your finger around to different positions.
Repeat as necessary.

Method 2 of 2:

Mac

Go to "System Preferences" > "Touch ID".
Click on the "+" to add a fingerprint. Type your account username and password.
Scan your finger.
Capture the edges as instructed. You may have to rotate your finger around to different positions.
Repeat as necessary.

finger fingerprint rotate

Lesley Montoya

Update 04 March 2020

You should read it