Touch ID doesn't work (MacBook Pro)

If your MacBook, iPad or iPhone touch ID doesn't respond, it is possible that the Touch ID sensor is dirty and it can't recognize your fingerprint. Grab a piece of soft cloth, gently clean the sensor and try again.

Maybe the Touch ID doesn't work because your fingers are dirty. Before touching the Touch ID sensor, make sure to wipe any oil or sweat from your fingers.

Maybe your device's Touch ID works, but it "forgot" your fingerprint pattern. In this case, consider deleting your fingerprint pattern and adding it again. If you are not sure how, follow the steps below:

1. Click on the Apple menu icon in the upper left corner of the screen and select System Preferences;
2. Click on Touch ID;
3. Move the mouse pointer over the fingerprint icon you want to delete and click on X in the upper left corner, once it appears;
4. Enter your password to confirm and click on Delete;
5. Repeat steps 1 and 2, click on Add a fingerprint and follow the on-screen instructions.

Maybe a temporary software-related issue is the reason why the Touch ID doesn't work. In this case, restarting the computer should be enough, in order to fix it.

If the Touch ID doesn't work and you are not sure what to do, contact Apple's support and they will instruct you on how to fix the issue. You can contact them online, on getsupport.apple.