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

Your iPhone holds some of your most private information — banking apps, personal messages, intimate photos, medical records, and more. While Face ID unlocks your device, that single layer of protection isn't always enough. Anyone who borrows your phone (with the screen already unlocked) can potentially access everything. Fortunately, Apple has built powerful tools directly into iOS that let you lock apps and photos with Face ID, adding an extra layer of biometric authentication exactly where you need it.

This comprehensive guide walks you through every method available in 2026, from Apple's native app-locking feature introduced in iOS 18 to specialized techniques for securing your photo library, notes, and sensitive documents.

What Does It Mean to Lock Apps and Photos with Face ID?

Locking apps and photos with Face ID means requiring biometric authentication (a facial scan) before someone can open specific applications or view particular images on your iPhone or iPad — even if the device itself is already unlocked. This creates a two-tier security system: one layer to access the device, and a second layer to access sensitive content within it.

This feature is especially useful when:

• You hand your phone to a friend or family member to show them something
• Your device is temporarily unattended but unlocked
• You share your device with children or coworkers
• You want to hide personal photos, financial apps, or private messages from casual snooping

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

Starting with iOS 18, Apple introduced a native app-locking feature that works with virtually every app on your iPhone. No third-party downloads required. Here's how to enable it:

1. Locate the app you want to lock on your Home Screen or App Library.
2. Long-press the app icon until the context menu appears.
3. Tap "Require Face ID" (or "Require Touch ID" on older devices).
4. Confirm by tapping "Require Face ID" again in the pop-up.
5. Authenticate with your face to activate the lock.

Now, whenever you or anyone else tries to open that app, iOS will demand a Face ID scan first. If authentication fails, the app won't open — and its contents (including notifications and search results) will be hidden from prying eyes.

Bonus: Hide Apps Entirely

When you long-press an app in iOS 18+, you'll also see an option to "Hide and Require Face ID." Choosing this moves the app to a hidden folder inside your App Library that is itself locked behind Face ID. The app will no longer appear on your Home Screen, in Spotlight search, or in Siri suggestions. This is the closest thing iOS has to a truly "secret" app.

How to Lock the Photos App with Face ID

Photos are among the most sensitive data on any phone. iOS gives you two distinct ways to protect them: locking the entire Photos app, or hiding specific images in a Face ID-protected album.

Method 1: Lock the Entire Photos App

1. Long-press the Photos app icon.
2. Select "Require Face ID."
3. Confirm the action.

From now on, opening Photos requires a facial scan. Even if someone bypasses your lock screen or uses your unlocked phone, your entire photo library stays private.

Method 2: Use the Hidden Album (Face ID Protected by Default)

Since iOS 16, the Hidden and Recently Deleted albums in Photos are automatically locked with Face ID. Here's how to move sensitive photos there:

1. Open the Photos app and select the image(s) you want to hide.
2. Tap the share icon (square with an upward arrow).
3. Scroll down and tap "Hide."
4. Confirm by tapping "Hide Photo."

To access hidden photos, scroll to the bottom of the Albums tab, tap Hidden, and authenticate with Face ID.

Verify Face ID Protection Is Enabled for Hidden Album

To make sure the Hidden album is locked:

1. Open Settings → Apps → Photos.
2. Ensure "Use Face ID" is toggled on.
3. Confirm "Show Hidden Album" matches your preference (turning it off removes the album from view entirely).

Comparing Native iOS App Locking vs. Third-Party Solutions

Before iOS 18, users relied on workarounds like Screen Time restrictions or dedicated third-party vaults. Here's how each option compares in 2026:

Feature	Native iOS (Require Face ID)	Screen Time Method	Third-Party Vault Apps
Face ID authentication	✅ Yes	❌ Passcode only	✅ Yes (varies by app)
Works with all apps	✅ Yes	✅ Yes	⚠️ Photos/files only
Hides notifications	✅ Yes	❌ No	⚠️ Depends
Hides from search	✅ Yes (with Hide option)	❌ No	✅ Yes
Free	✅ Yes	✅ Yes	❌ Usually paid
iOS version required	iOS 18+	iOS 12+	Varies

Legacy Method: Locking Apps with Screen Time (iOS 17 and Earlier)

If you're using an older device that can't run iOS 18, you can still restrict app access using Screen Time. This method uses a passcode rather than Face ID directly, but it's the best native alternative:

1. Go to Settings → Screen Time.
2. Tap "App Limits," then "Add Limit."
3. Select the app(s) you want to lock and set a time limit of 1 minute.
4. Enable "Block at End of Limit."
5. Set a Screen Time passcode under Settings → Screen Time → Lock Screen Time Settings.

Once the 1-minute limit expires each day, the app becomes inaccessible without your Screen Time passcode.

How to Lock Notes with Face ID

The Notes app has its own built-in locking system that predates the universal app-lock feature. It's ideal for storing passwords, journal entries, or confidential information:

1. Open the Notes app and select the note you want to lock.
2. Tap the three-dot menu at the top right.
3. Select "Lock."
4. Choose between using your device passcode or a custom Notes password.
5. Ensure Face ID is enabled for unlocking (Settings → Notes → Password → Use Face ID).

Additional Privacy Measures to Consider

Locking apps and photos is a strong first step, but comprehensive digital privacy involves multiple layers. Consider these complementary practices:

1. Enable Advanced Data Protection for iCloud

This turns on end-to-end encryption for iCloud Photos, Notes, backups, and more — meaning even Apple can't access your data. Enable it under Settings → [Your Name] → iCloud → Advanced Data Protection.

2. Use Encrypted DNS

Configure encrypted DNS (like Cloudflare's or Quad9's) in Settings → General → DNS to prevent network snooping on the sites you visit.

3. Shorten and Protect Sensitive Links

When sharing links to personal photo albums, cloud documents, or private pages, use a privacy-focused link shortener. Lunyb lets you create short, trackable URLs without exposing the destination — a useful tool for sharing sensitive resources without leaking metadata. You can read more in our honest review of Lunyb or compare options in our 2026 buyer's guide to URL shorteners.

4. Turn Off Lock Screen Previews

Go to Settings → Notifications → Show Previews → When Unlocked so message contents don't appear on your lock screen.

5. Review App Permissions Regularly

Check which apps have access to your camera, microphone, location, and photo library under Settings → Privacy & Security. Revoke anything unnecessary.

Troubleshooting: Face ID Not Working for Locked Apps

If Face ID isn't authenticating properly when opening locked apps, try these fixes:

1. Clean your TrueDepth camera — smudges are the #1 cause of failures.
2. Re-scan your face: Settings → Face ID & Passcode → Reset Face ID.
3. Check that Face ID is enabled for iPhone Unlock and iTunes/App Store in the same menu.
4. Restart your device.
5. Update iOS to the latest version — many biometric bugs are patched frequently.

Pros and Cons of Locking Apps with Face ID

Pros

• Adds a strong second layer of security beyond device unlock
• Fast and frictionless — a glance is all it takes
• Hides notifications and search results for locked apps
• Built into iOS 18+, no third-party apps needed
• Free and available on all Face ID-capable devices

Cons

• Requires iOS 18 or later for the native feature
• Face ID can fail with masks, sunglasses, or poor lighting
• Doesn't encrypt the underlying data — it's an access barrier, not encryption
• A determined attacker with your device passcode can still bypass Face ID locks

Frequently Asked Questions

Can I lock any app on my iPhone with Face ID?

Yes. Starting with iOS 18, you can lock virtually every app — including Photos, Messages, WhatsApp, banking apps, and games — using the native "Require Face ID" option. Simply long-press the app icon and choose it from the menu.

Does locking an app with Face ID also hide its notifications?

Yes. When you lock an app with Face ID in iOS 18+, its notification contents are automatically hidden from the lock screen and Notification Center. Only a generic "Notification" placeholder appears until you authenticate.

What happens if Face ID fails when I try to open a locked app?

If Face ID fails, you'll be prompted to enter your device passcode as a fallback. After multiple failed attempts, the app remains locked and you'll need to authenticate through Settings.

Can someone bypass a Face ID app lock if they know my passcode?

Yes. Your device passcode serves as a fallback for all Face ID prompts. If someone knows your passcode, they can unlock any Face ID-protected app. This is why keeping your passcode private is critical, and why you should use a strong alphanumeric passcode rather than a simple 4-digit one.

Do locked apps still sync data in the background?

Yes. Locking an app with Face ID only prevents visual access — it doesn't stop the app from receiving data, syncing with iCloud, or downloading updates in the background. The lock is purely an authentication barrier for opening the app.

Final Thoughts

Locking apps and photos with Face ID is one of the easiest and most effective privacy upgrades you can make on an iPhone. Thanks to iOS 18's native app-locking feature, you no longer need third-party tools or clunky workarounds — a simple long-press protects any app with the same biometric security that guards your device. Combined with the Hidden album, locked Notes, and broader privacy hygiene like encrypted DNS and careful link-sharing, you can build a genuinely secure mobile experience in just a few minutes.

Start with the apps that matter most — your banking app, Photos, Messages, and any journaling or health apps — and expand from there. Your future self (and anyone who accidentally sees your unlocked phone) will thank you.