Touch ID sensor on your iOS device reads your fingerprints. You can enroll up to five fingers.
Follow these steps:
- Go to Settings > Touch ID & Passcode.
- Choose the various purposes you want to Touch ID for.
- Touch a print to rename or delete it.
- Swipe to delete a fingerprint.
Note: If you have more than one fingerprint enrolled, you can touch a finger to the Home button to see the fingerprint it is linked to in the list. If your finger matches, that finger in the list will highlight briefly.