Dina Bader: Face ID securely locks your iPhone or iPad Pro

Face ID is available on more Apple devices than ever before. Here's everything you need to know about this tool.

Apple first introduced Face ID to the iPhone in 2017 with the iPhone X. Though it was somewhat contentious at first (there was a lot of FUD about whether or not it was secure), a lot of Apple fans have come around to Face ID as a replacement for Touch ID (though some would argue both would be even better).

Face ID uses biometric authentication for unlocking a device, making payments, and accessing sensitive data. It uses your device's TrueDepth camera to scan your face using depth mapping to gather your face's details. With a full scan of your face, you can lock down your iPhone or iPad Pro so that your face is the only thing that can unlock it without knowing your passcode.

Here's more about Face ID on iPhone and iPad.

Which devices support Face ID?

As of December 2020, the following devices support Face ID.

iPhone X
iPhone XR
iPhone XS
iPhone XS Max
iPhone 11
iPhone 11 Pro
iPhone 11 Pro Max
iPhone 12
iPhone 12 mini
iPhone 12 Pro
iPhone 12 Pro Max
iPad 11-inch (2018)
iPad 12.9-inch (2018)
iPad 11-inch (2020)
iPad 12.9-inch (2020)

Looking for a new phone? Check out our best iPhone of 2020, including the new iPhone 12 series.

How to set up Face ID on iPhone and iPad

Setting up Face ID is similar to setting up Touch ID, except with your face! When you first set up your device, you'll be asked to set up Face ID, but you can do it at any time from the Settings app.

How to set up Face ID on iPad Pro How to set up Face ID on iPhone

How to add a second person to Face ID

Your face doesn't have to be the only face that unlocks your iPhone or iPad Pro. You can set up a second person for Face ID, for whatever reasons you may need. It's easy, although a bit hidden.

How to add a second person to Face ID

How to use Face ID on iPhone and iPad

Face ID can do many things to make your life easier. Much like Touch ID before it, Face ID lets you not only unlock your phone or iPad, but authorize Apple Pay payments, confirm iTunes and App Store Purchases, and activate username and password autofill in Safari.

How to use Face ID How to use Apple Pay on iPhone

How to fix Face ID issues when wearing sunglasses

Face ID uses a mix of camera and IR technology to scan your face and match the scan with the one inside your iPhone or iPad's internal Secure Enclave. Usually, this process works within seconds, but extra items on your face (like sunglasses) can trigger a passcode pop-up.

Can't use your iPhone's Face ID with sunglasses? Try this fix!

How to train Face ID to recognize weird facial expressions

To simplify a very complex process; Face ID captures your facial structure and uses it to identify you and then unlock your device It also learns the ways in which your face changes over time and throughout the day. If, for example, your eyes are really puffy in the morning, Face ID learns that it's still you, but with a slight change in your "expression."

How to train Face ID to recognize different facial expressions

How to disable Face ID

Quickly disabling Face ID on your device can be useful for a number of reasons, but particularly if you're afraid that someone will try to unlock your phone without your permission. This could include law enforcement, criminals, or even just nosy family members.

How to quickly disable Face ID