Do any of the following:
Rename a fingerprint: Click the text below a fingerprint, then enter a name.
Delete a fingerprint: Click a fingerprint, enter your password, click Unlock, then click Delete.
To use Touch ID for these tasks, you must have logged in to your Mac already by entering your password.
Unlock your Mac and some password-protected items: When you wake your Mac from sleep, or open a password-protected item, just place your finger on Touch ID when asked.
Log in from the login window: Click your name in the login window, then place your finger on Touch ID.
Only user accounts that have passwords can be unlocked with Touch ID. in the menu bar with the name of the current user. See If Touch ID isn’t working on your Mac.
If you still have to enter your password: For security, you need to enter your password when you start your Mac. Sometimes you need to enter your password to continue using Touch ID. For example, users must re-enter their password every 48 hours and after five incorrect fingerprint attempts.
Note: For added security, only logged-in users can access their own Touch ID information; an administrator cannot change another user’s Touch ID settings or fingerprints.