Touch ID lets users register up to five fingers that can unlock an iPhone, which has long been a boon for those who share access to their iPhone with trusted family members. However, users of the iPhone X haven’t been able to give a second person Face ID-based access, forcing those people to wait for Face ID to fail and then tap in a passcode manually. iOS 12 has an option, while not recommended or designed for this, allows a second person to register their face with Face ID on the iPhone X and the new iPhone XR, XS, and XS Max. To set this up, go to Settings > Face ID & Passcode. Enter your passcode and tap Set Up an Alternate Appearance. Then give your iPhone to the person who should have access and have them follow the simple setup directions.
What Should You Do about an Authentication Code You DIDN’T Request?
Receiving a two-factor authentication code you didn’t request shows that your security is working, but it’s also an indication that someone may have your password and be trying to break into your account.