How to Lock Apps and Photos with Face ID: Complete 2026 Guide

Your iPhone holds nearly every private detail of your life, from banking apps and personal messages to sensitive photos you'd rather not have anyone stumble across. While Face ID unlocks your device, it doesn't automatically protect what's inside once someone hands your phone to a friend or a child grabs it to play a game. Fortunately, Apple has made major strides in giving you granular control, letting you lock specific apps and hide photo albums behind biometric authentication.

This comprehensive guide walks you through every native and third-party method to lock apps and photos with Face ID in 2026, along with practical privacy tips to keep your data safe.

Why You Should Lock Individual Apps and Photos

Locking individual apps and photos with Face ID adds a second layer of biometric authentication on top of your device passcode, ensuring that even someone who has physical access to your unlocked iPhone cannot open sensitive content. This is especially important in shared households, workplaces, or if you frequently hand your phone to others.

Common scenarios where per-app locking matters include:

• Handing your phone to a child to watch videos
• Letting a friend snap a photo or make a call
• Showing a colleague a picture and worrying they'll swipe through your camera roll
• Losing your phone temporarily while it's still unlocked
• Traveling through security checkpoints or borders

How to Lock Any App with Face ID on iPhone (iOS 18 and Later)

Starting with iOS 18, Apple introduced a built-in feature that lets you lock virtually any app on your iPhone using Face ID, Touch ID, or your passcode. No third-party tools required.

Step-by-Step: Lock an App with Face ID

1. Locate the app you want to lock on your Home Screen or in the App Library.
2. Touch and hold the app icon until a contextual menu appears.
3. Tap Require Face ID (or Require Touch ID on supported devices).
4. Confirm by tapping Require Face ID in the pop-up.
5. Authenticate with Face ID to activate the lock.

The next time anyone tries to open that app, whether it's WhatsApp, your banking app, or Notes, they'll need to pass Face ID first. If authentication fails, the app won't open and its content will not appear in search results, Siri suggestions, or notifications previews.

How to Unlock or Remove the Requirement

1. Touch and hold the locked app icon.
2. Tap Don't Require Face ID.
3. Authenticate with Face ID to confirm the change.

How to Hide Apps Entirely Behind Face ID

Beyond simply locking an app, iOS 18 also lets you hide apps completely. Hidden apps move to a locked Hidden folder inside the App Library and disappear from your Home Screen, search, notifications, and even Settings.

Steps to Hide an App

1. Long-press the app icon.
2. Tap Require Face ID.
3. In the confirmation menu, choose Hide and Require Face ID.
4. Tap Hide App to confirm.

To access hidden apps later, open the App Library, scroll to the bottom, and tap the Hidden folder. Face ID will be required to view its contents.

Important note: Not every app supports hiding. Core system apps like Phone, Messages, Camera, Settings, and Safari can be locked but not hidden.

How to Lock Photos with Face ID Using the Hidden Album

The Photos app on iOS includes a built-in Hidden album that is protected by Face ID by default. Any photo or video you move into this album is automatically encrypted behind biometric authentication.

Move Photos to the Hidden Album

1. Open the Photos app.
2. Tap the photo or video you want to hide.
3. Tap the More button (three dots) in the top-right corner.
4. Select Hide.
5. Confirm by tapping Hide Photo.

To hide multiple items at once, tap Select in the top-right of any album, choose your photos, then tap the More button and select Hide.

Access the Hidden Album

1. Open Photos and scroll to the bottom.
2. Under Utilities, tap Hidden.
3. Authenticate with Face ID to view your hidden photos.

Make Sure the Hidden Album Is Locked

By default this is enabled, but double-check:

1. Open Settings.
2. Scroll down and tap Apps → Photos.
3. Toggle on Use Face ID.

Locking Photos with the Notes App Trick

If you want an extra hidden layer beyond the built-in Hidden album, you can move photos into a locked note in the Notes app. Locked notes require Face ID or a separate password.

Create a Locked Note with Photos

1. Open Notes and create a new note.
2. Tap the camera icon and select Choose Photo or Video.
3. Add the photos you want to protect.
4. Tap the More button (three dots) and select Lock.
5. Set a note password if prompted and enable Face ID.

Once locked, the photos won't appear in your Photos library search or Memories, and the note is fully encrypted.

Comparison: Built-in iOS Locking Options

Method	What It Protects	Visibility	Best For
Require Face ID for App	Individual app contents	Still visible on Home Screen	Banking, messaging, health apps
Hide and Require Face ID	Entire app and its data	Hidden from Home Screen and search	Sensitive or private-use apps
Photos Hidden Album	Selected photos/videos	Visible as "Hidden" folder	Everyday private photos
Locked Notes with Photos	Photos inside a note	Note appears but locked	Documents, IDs, passwords
Screen Time App Limits	App access via PIN	App visible but blocked	Parental controls

Using Screen Time to Lock Apps with a Passcode

If you're on an older iOS version that doesn't support per-app Face ID, or if you want to restrict apps for a child, Screen Time offers a passcode-based alternative.

Set Up Screen Time App Limits

1. Open Settings → Screen Time.
2. Tap Use Screen Time Passcode and set a 4-digit passcode different from your device passcode.
3. Tap App Limits → Add Limit.
4. Choose the app or category to lock.
5. Set the time limit to 1 minute.
6. Enable Block at End of Limit.

Once the minute expires, the app will require the Screen Time passcode to open. Because Screen Time is separate from Face ID, this is useful when you want a password-only barrier that others can't bypass just by looking at your phone.

Third-Party Apps That Add Face ID Protection

Many apps come with their own built-in Face ID locks, independent of iOS system settings. Here are some categories worth configuring:

Messaging Apps

• WhatsApp: Settings → Privacy → App Lock → toggle Face ID.
• Signal: Settings → Privacy → Screen Lock.
• Telegram: Settings → Privacy and Security → Passcode & Face ID.

Password Managers and Financial Apps

1Password, Bitwarden, LastPass, PayPal, and virtually every banking app support Face ID as a login method. Always enable it from the app's own settings for defense in depth.

Private Photo Vault Apps

Dedicated apps like Private Photo Vault, KeepSafe, and Locker store photos in an encrypted container separate from the Photos app. These are useful if you want zero risk of accidental iCloud syncing or Photos search exposure. Always verify that a vault app uses on-device encryption and does not upload your files to unknown servers.

Best Practices for Face ID Security

Face ID is only as strong as the settings around it. Follow these practices to keep your locked content genuinely private.

1. Enable Attention Detection

Go to Settings → Face ID & Passcode and turn on Require Attention for Face ID. This ensures Face ID only unlocks when your eyes are open and looking at the screen, preventing someone from unlocking your phone while you're asleep.

2. Use a Strong Alphanumeric Passcode

Face ID falls back to your passcode after failed attempts or a restart. A 4-digit PIN can be brute-forced quickly. Switch to a 6-digit numeric or, better yet, an alphanumeric passcode in Settings → Face ID & Passcode → Change Passcode → Passcode Options.

3. Disable Lock Screen Access to Sensitive Widgets

Notifications and widgets can leak information even when your phone is locked. Under Settings → Face ID & Passcode, disable access to Today View, Notification Center, Control Center, and Reply with Message when locked.

4. Turn On Stolen Device Protection

Available in iOS 17.3 and later, this feature enforces a 1-hour delay before critical settings can be changed if your iPhone is away from familiar locations. Enable it in Settings → Face ID & Passcode → Stolen Device Protection.

5. Review What's in iCloud

Hiding a photo locally doesn't hide it from iCloud web access. If you sync Photos to iCloud, enable Advanced Data Protection under Settings → [Your Name] → iCloud → Advanced Data Protection for end-to-end encryption.

Common Mistakes to Avoid

• Relying only on Face ID: Always pair it with a strong passcode.
• Sharing your device passcode: Anyone with the passcode can add their face to Face ID.
• Forgetting notification previews: Locked apps can still show message previews. Turn off previews under Settings → Notifications.
• Trusting shady third-party vault apps: Some free vaults have shipped with spyware. Stick to reputable, well-reviewed developers.
• Ignoring backups: Encrypted iTunes/Finder backups protect data if your device is lost.

Extending Privacy Beyond Your Phone

Locking apps and photos is only one part of a broader digital privacy strategy. Every time you share a link, click a tracker, or send a document, you're leaving a data trail. Using a privacy-respecting link tool like Lunyb lets you share short URLs without exposing recipient behavior to third-party ad networks, and you can read our full honest review of Lunyb to see how it stacks up. If you're evaluating other tools, our 2026 buyer's guide to URL shorteners compares the leading options side by side.

Small habits compound quickly. Enabling encrypted DNS on your iPhone (Settings → General → VPN & Device Management is where profiles land, but you can also configure DNS-over-HTTPS through Configurator profiles), turning on iCloud Private Relay if you have iCloud+, and using a privacy-focused browser like Safari with strict tracking prevention all reinforce the biometric locks you just set up.

Frequently Asked Questions

Can I lock the Photos app entirely with Face ID?

Yes. In iOS 18 and later, long-press the Photos app icon and select Require Face ID. This adds a biometric barrier to the entire app, not just the Hidden album. Keep in mind that some system integrations (like photo pickers in other apps) may still show a limited view.

Does Face ID work if I'm wearing a mask or sunglasses?

Face ID with a mask is supported on iPhone 12 and later running iOS 15.4 or newer. You must enable it under Settings → Face ID & Passcode → Face ID with a Mask. Most sunglasses work fine, though some polarized lenses can block the infrared sensors.

Will locked apps still receive notifications?

Yes, notifications still arrive, but the content preview behavior depends on your notification settings. For maximum privacy, go to Settings → Notifications → Show Previews and set it to When Unlocked or Never.

What happens to locked apps and hidden photos when I back up my iPhone?

Everything is included in your backup. Encrypted iTunes/Finder backups and iCloud backups both preserve your locked and hidden content. When you restore to a new device, the locks remain in place and require Face ID setup on the new phone.

Can someone bypass Face ID with a photo of me?

No. Face ID uses a TrueDepth camera system that projects over 30,000 infrared dots to create a 3D depth map of your face. Flat photos, videos, and standard masks cannot fool it. Apple states the false-match probability is roughly 1 in 1,000,000, compared to 1 in 50,000 for Touch ID.

Is there a way to lock apps on older iPhones without iOS 18?

On iOS 17 and earlier, native per-app locking isn't available system-wide, but you can use Screen Time app limits with a passcode, or rely on individual apps' built-in Face ID settings (WhatsApp, banking apps, password managers all offer this). Shortcuts automations can also trigger a lock screen when specific apps open.

Final Thoughts

Locking apps and photos with Face ID transforms your iPhone from a single-key vault into a multi-layered security system. Native iOS 18 features cover most needs, from requiring Face ID on individual apps to hiding entire apps in a protected folder, while the Hidden album and locked notes give you flexible photo privacy. Combine these tools with a strong passcode, thoughtful notification settings, and Stolen Device Protection, and you'll have a device that respects your privacy even when it briefly leaves your hands.

Privacy is a habit, not a feature. Take five minutes today to audit which apps and photos deserve an extra layer of Face ID, and you'll thank yourself the next time you hand your phone to a stranger to snap a group photo.