iPhone 8 and older models with Touch ID can add multiple fingerprints to unlock, so you can add other people’s fingerprints to unlock your iPhone. For the iPhone X and later models, it uses facial recognition to unlock. In fact, this unlocking method can have 2 facial information.

To set up an alternative appearance, follow these steps:
- Go to “Settings” – “Face ID & Passcode“.
- Tap “Set up an Alternate Appearance“.

The next step is to enter the face information: directly look straight to the iPhone or IPAD and place the face in the view box, slowly turn the head to complete the full-scale collection, complete the first face ID scan, tap “Continue”, then turn slowly The head is completed for the second all-round acquisition. After completing the face ID setting, tap “complete”.
After the entry is completed, both faces can unlock the iPhone.