You can add up to five faces to Face ID on a single device

Face ID recognizes your face using the camera and sensors in your device. If you want another person — or yourself with significant changes like glasses or a beard — to unlock your phone, you add their face as a separate Face ID profile. Each profile is stored only on your device, encrypted, and never sent to Apple's servers.

The process takes about a minute per face. You'll need access to the device itself and the passcode, because Face ID settings are locked behind your security credentials. Once you've added a second face, your device will unlock for either person without any extra steps.

Key Takeaways

  • You can store up to five faces on one device, and Face ID will unlock for any of them without asking which person is trying to unlock it.
  • To add a face, go to Settings > Face ID & Passcode, enter your passcode, tap "Add a Face ID", and follow the on-screen prompts to position your face in the circle.
  • The setup process requires you to move your head in a complete circle so the sensors can map your face from multiple angles.
  • Face ID works best in normal lighting; very bright sunlight or complete darkness may cause it to fail, but you can always fall back to your passcode.

Step-by-step: adding a second face on iPhone or iPad

Open Settings on your device. Scroll down and tap Face ID & Passcode. You'll be asked to enter your passcode — this is the security step that prevents someone else from adding their face without your permission.

Once you're in, tap Add a Face ID. A screen will appear with a circle and instructions to position your face inside it. Hold your device at a comfortable distance — roughly 10 to 20 inches from your face — and look directly at the camera. The device will guide you through two scans. During each scan, you'll rotate your head slowly in a complete circle so the sensors can map your face from different angles and lighting conditions.

After the two scans complete, you'll see a confirmation screen. Tap Done. The new face is now added and will unlock your device immediately. You don't need to do anything else or restart the device.

What happens when multiple faces are stored

When you have two or more faces registered, Face ID checks against all of them each time you try to unlock. If your face matches any stored profile, the device unlocks. There's no menu asking "which person are you" — it just works. This is useful for families or partners who share a device, or for your own face under different conditions.

If Face ID fails to recognize you after a few attempts, you'll be prompted to enter your passcode instead. This is a security feature: if someone holds your phone up to your face without your consent, the device won't unlock after a few failed tries, and they'll need your passcode.

Why you might add a second face to your own device

You can add your face twice if you've had significant changes — a new beard, glasses you wear regularly, or a major haircut. Rather than adding yourself as a second profile, you can also use Appearance Variations within a single Face ID profile. Go to Settings > Face ID & Passcode > Your Face ID profile, and tap Get More Matches to teach that one profile to recognize you with glasses, a hat, or facial hair.

This approach is simpler than managing two separate faces, because you're training one profile to be more flexible rather than creating duplicate entries. If you wear glasses only sometimes, adding an appearance variation takes about 30 seconds and improves recognition without cluttering your Face ID list.

Removing a face you no longer want to recognize

Go to Settings > Face ID & Passcode and enter your passcode. You'll see a list of all registered faces. Tap Edit in the top right, then tap the red minus icon next to the face you want to remove. Tap Delete to confirm. That face will no longer unlock the device.

You can remove any face except your primary one — your device always needs at least one registered face. If you want to replace your primary face entirely, add a new one first, then remove the old one.

Face ID limitations and when it won't work

Face ID requires good lighting to work reliably. In very bright sunlight, the infrared sensors can struggle. In complete darkness, they can't map your face at all. In both cases, you'll need to enter your passcode instead — Face ID will prompt you to do so after a few failed attempts.

Face ID also won't work if your device is held at an extreme angle, if you're wearing a ski mask or motorcycle helmet, or if your face is partially obscured. Sunglasses usually don't block Face ID, but very dark or reflective lenses sometimes do. If you regularly wear something that blocks your face, add an appearance variation that includes it, or rely on your passcode in those situations.

Privacy and security of stored faces

Face ID data is stored only on your device, in a secure area called the Secure Enclave. Apple cannot see your face data, and it is not backed up to iCloud or synced across devices. If you sell or give away your device, the faces are erased when you perform a factory reset.

Because Face ID data never leaves your device, adding another person's face does not create a record anywhere else. The person whose face you've added has no way to know they're registered unless you tell them. If you're concerned about privacy or consent, make sure the other person knows their face has been added to your device.

Frequently Asked Questions

Can I add the same person's face twice with different settings?

Not exactly. You can add one person as a separate Face ID profile, but Face ID doesn't let you create two independent entries for the same person. Instead, use appearance variations within one profile to teach it to recognize them with glasses, a hat, or facial hair. This is more efficient than managing duplicate faces.

What if someone tries to unlock my phone with their face when I have multiple faces registered?

Face ID will only unlock if their face matches one of the registered profiles. If it doesn't match, the device will ask for your passcode. Face ID is designed to be secure even when multiple faces are stored — it won't unlock for a stranger just because you've added a family member.

Do I need to update Face ID if I change my appearance significantly?

Not immediately. Face ID adapts over time as it recognizes you in different lighting and angles. If you've made a major change like shaving off a beard or getting glasses, you can add an appearance variation to speed up recognition. If Face ID stops working reliably, you can remove the old profile and add a new one.

Can I add a face to my device if I've forgotten my passcode?

No. You need your passcode to access Face ID settings and add a new face. If you've forgotten your passcode, you'll need to reset your device using your Apple ID or a computer, which will erase all data including existing Face ID profiles.

Will adding another face slow down Face ID?

No. Face ID checks against all registered faces in a fraction of a second, and adding more faces does not noticeably affect speed or battery life. You can add up to five faces without performance impact.