iPhone X and up offers a feature called Face ID which allows you to unlock and control your phone with a quick scan of your face. You can add the facial recognition of one other person or improve facial recognition after setting up Face ID with/without glasses if you have iOS 12 or later installed onto your iPhone X and iPad Pro 2018 or later.

Steps

  1. 1
    Make sure that you have your own Face ID already set up. You cannot set up an additional face without having your own already implemented on your phone.
  2. 2
    Open your iPhone'sSettings. The Settings app icon resembles a grey box with gears on it.
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  3. 3
    Scroll down and tap Face ID & Passcode .
  4. 4
    Type in your 4 to 6 digit passcode, when prompted, if you have one.
    • If you have not yet created a passcode, it will automatically open the Face ID settings. It is recommended that you set one up for further security.
  5. 5
    Tap Set Up an Alternate Appearance . It's located right above the Reset Face ID button.
  6. 6
    Click Get Started when prompted.
  7. The ticks correspond with the part of the face that has been scanned, and will turn green once done.
    • Rotate your head slowly. Going too fast can cause it to not be able to recognize your face.
  8. 8
    Repeat the step once more. Your iPhone will ask to scan the alternate appearance one more time.
  9.  This will save the alternate appearance to your iPhone.
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