Apple’s Face ID makes it easy to unlock your iPhone just by looking at it. But you might notice sometimes that it doesn’t recognize you. Maybe you’re wearing glasses or a lot of makeup.
With a new function called “alternate appearance,” you can improve Face ID’s recognition. The feature is part of iOS 12, which Apple will release in the next couple months.
Here’s how it works, and how you can set it up in iOS 12.
Source: Tech CNBC
Here's how Apple's new iPhone software makes Face ID even more accurate