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

Your iPhone holds everything — messages, banking apps, personal photos, health data, and work documents. When you hand your phone to a friend to show a picture or let a family member play a game, you probably don't want them tapping into your DMs or scrolling through your camera roll. Fortunately, Apple has built-in tools that let you lock apps and photos with Face ID, adding a second layer of biometric protection to the most sensitive parts of your device.

This guide walks you through every method available on iOS 17 and iOS 18, including the newest Face ID app-locking feature, the Hidden album for photos, Screen Time restrictions, and third-party options. By the end, you'll know exactly how to protect your privacy without slowing down your daily workflow.

Why Lock Apps and Photos with Face ID?

Face ID app locking is a biometric security feature that requires your face to be scanned before an app opens or hidden photos become visible. It prevents anyone with physical access to your unlocked iPhone from seeing content you'd rather keep private.

Consider the everyday situations where this matters:

• You hand your phone to a child to watch a video and they swipe into your banking app.
• A coworker glances over your shoulder while you're checking a shared photo album.
• Your phone is temporarily left unattended on a desk or table.
• A repair technician needs access to run diagnostics but shouldn't see personal files.

In each case, Face ID acts as a checkpoint. Even if someone can use your phone, they can't open the apps or view the photos you've protected without your face — and Face ID cannot be spoofed with a photograph or basic mask thanks to Apple's TrueDepth camera system.

Requirements Before You Start

Before locking apps and photos with Face ID, make sure your device meets these baseline requirements:

1. iOS 18 or later for the built-in "Require Face ID" app-locking feature. Older versions have partial support.
2. A Face ID-capable iPhone — iPhone X or newer, excluding the iPhone SE line which uses Touch ID.
3. Face ID enrolled and working under Settings → Face ID & Passcode.
4. A strong device passcode as a backup, ideally 6 digits or an alphanumeric passphrase.

If you're running iOS 17, you can still lock the Hidden and Recently Deleted albums in Photos and use Screen Time to gate specific apps, but the one-tap app lock arrived officially in iOS 18.

How to Lock Any App with Face ID on iOS 18

Starting with iOS 18, Apple added a native way to require Face ID for any app on your Home Screen. Here's how to enable it:

1. Go to your Home Screen or App Library.
2. Touch and hold the icon of the app you want to lock until the context menu appears.
3. Tap Require Face ID (labeled Require Touch ID on supported devices).
4. A confirmation dialog will appear — tap Require Face ID again.
5. Authenticate with Face ID to confirm the change.

From now on, whenever you or anyone else taps that app, iOS will demand a Face ID scan before opening it. The app's content will also be hidden from Search, Siri suggestions, and notifications previews.

How to Unlock or Remove Face ID Protection

To reverse the lock, long-press the app icon again and choose Don't Require Face ID. You'll need to authenticate one final time to disable the protection.

How to Hide Apps Behind Face ID Completely

iOS 18 also lets you go a step further and move sensitive apps into a locked, hidden folder in the App Library. Hidden apps disappear entirely from the Home Screen, Spotlight, notifications, and app switcher until you unlock them with Face ID.

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

The app is now stored in a locked "Hidden" folder at the very bottom of your App Library. To access it, scroll to the bottom of App Library, tap the Hidden folder, and authenticate with Face ID.

This is especially useful for finance, dating, medical, or journaling apps that you'd rather not even acknowledge exist to casual observers.

How to Lock Photos with Face ID

Apple's Photos app has supported Face ID locking for the Hidden and Recently Deleted albums since iOS 16, and this feature is enabled by default in iOS 17 and iOS 18.

Step 1: Enable Face ID for Hidden and Recently Deleted

1. Open Settings.
2. Scroll down and tap Photos.
3. Toggle on Use Face ID (or Use Touch ID).

Step 2: Move Photos to the Hidden Album

1. Open the Photos app.
2. Tap the photo (or select multiple photos) you want to hide.
3. Tap the Share icon (or the three-dot menu).
4. Choose Hide.
5. Confirm by tapping Hide Photo.

Step 3: Access Hidden Photos

To view hidden photos later, open Photos, scroll to the bottom, tap Hidden under Utilities, and authenticate with Face ID. The album will unlock and display all your hidden content.

The Recently Deleted album works the same way — anything you delete is Face ID-protected for up to 30 days before permanent removal.

Locking Photos Beyond the Hidden Album

The default Hidden album is fine for casual privacy, but it's the first place a snooping user would look. For stronger protection, combine the Hidden album with these techniques:

Option 1: Use the Notes App as a Photo Vault

1. Open Notes and create a new note.
2. Tap the camera icon and choose Choose Photo or Video.
3. Insert your sensitive images.
4. Tap the share icon and select Lock Note.
5. Set a password and enable Face ID unlock.
6. Delete the originals from your Photos library.

Option 2: Lock Photos Inside Files with an Encrypted Folder

You can create a password-protected ZIP archive of photos using the Shortcuts app, then store it in Files. Combined with iCloud's Advanced Data Protection, this gives you end-to-end encryption on the archive.

Option 3: Third-Party Photo Vault Apps

Apps like KeepSafe, Photo Vault, and Secret Photo Album provide dedicated encrypted storage with Face ID unlock. If you go this route, choose apps with a clear privacy policy, no ads, and local-only or end-to-end encrypted cloud sync.

Comparison: Native iOS Options vs Third-Party Apps

Feature	iOS 18 Face ID App Lock	Photos Hidden Album	Locked Notes	Third-Party Vault Apps
Cost	Free	Free	Free	Free–$9.99/mo
Face ID Support	Yes	Yes	Yes	Usually yes
Hides from Search	Yes (if hidden)	Yes	Partial	Yes
End-to-End Encryption	Device only	Device only	Yes	Varies
Works Offline	Yes	Yes	Yes	Usually yes
Decoy Password	No	No	No	Sometimes

Using Screen Time to Lock Apps on Older iPhones

If you're stuck on iOS 17 or earlier, or you want more granular control, Screen Time offers an alternative way to lock apps behind a passcode. It's slightly less convenient than Face ID but works on any iPhone that supports iOS 12+.

1. Open Settings → Screen Time.
2. Tap Use Screen Time Passcode and set a 4-digit code different from your device passcode.
3. Go to App Limits → Add Limit.
4. Select the app or category (e.g., Social, Photo & Video).
5. Set the daily limit to 1 minute.
6. Enable Block at End of Limit.

After one minute of use each day, the app will be locked behind the Screen Time passcode. It's a workaround rather than a true biometric lock, but it's effective for casual snooping.

Best Practices for Face ID Security

Face ID is one of the most secure biometric systems on any consumer device, but you can strengthen it further with a few habits:

• Enable Attention Awareness — Settings → Face ID & Passcode → Require Attention for Face ID. This ensures your eyes must be open and looking at the phone.
• Use a strong device passcode as a fallback. If Face ID fails five times, the passcode is the last line of defense.
• Enable Stolen Device Protection in iOS 17.3+ to add a security delay for sensitive changes when away from familiar locations.
• Update iOS promptly to get the latest patches for biometric bypass vulnerabilities.
• Don't share your passcode, even with trusted people. A shared passcode invalidates every Face ID lock you set up.

Pros and Cons of Face ID App Locking

Pros

• Instant, no-typing authentication
• Deeply integrated into iOS — no extra apps needed
• Hides app content from Search, Siri, and notifications
• Uses secure enclave, so biometric data never leaves the device
• Works offline without any account or subscription

Cons

• Only available natively on iOS 18+
• Doesn't protect against someone who knows your device passcode
• No per-app decoy or duress modes
• Hidden folder still exists in a predictable location in App Library
• Cannot lock system apps like Settings themselves

Extending Privacy Beyond Your Device

Locking apps and photos on your iPhone protects local data, but your digital privacy extends into every link you click and every service you sign up for. Consider these complementary habits:

• Use encrypted DNS (Settings → General → VPN & Device Management — but for the DNS option) to prevent network-level snooping on the sites you visit.
• Enable iCloud's Advanced Data Protection for end-to-end encryption of backups, photos, and notes.
• Use a private browser like Safari with Intelligent Tracking Prevention or a hardened alternative for sensitive research.
• When sharing links, use a shortener that respects your privacy. Lunyb lets you create clean, trackable links without harvesting personal data — a small but meaningful upgrade over legacy shorteners. You can read our honest review of Lunyb for more context, or check the 2026 buyer's guide to URL shorteners to compare options.

Troubleshooting Common Face ID Lock Issues

Face ID Isn't Prompting When I Open a Locked App

Check that Face ID is enabled system-wide under Settings → Face ID & Passcode, and that the specific app still has "Require Face ID" toggled on. Reboot your phone if the lock seems ignored.

The App Lock Option Doesn't Appear

Verify you're on iOS 18 or later. The feature was rolled out with iOS 18, and some third-party apps take longer to support it. Update the app to its latest version.

Hidden Photos Are Still Visible in Memories or Widgets

iOS 16 and later automatically exclude hidden photos from Memories, Featured Photos, and the Photos widget. If they're still appearing, toggle Show Hidden Album off under Settings → Photos.

FAQ

Can someone bypass Face ID with a photo of my face?

No. Face ID uses a TrueDepth camera that projects over 30,000 infrared dots onto your face to build a 3D depth map. Flat photos, videos, or standard masks cannot fool it. Apple's published false-match rate is roughly 1 in 1,000,000.

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

Yes. When you enable Require Face ID on an app in iOS 18, notification previews are hidden by default until you authenticate. This prevents sensitive messages from appearing on the Lock Screen.

What happens if Face ID fails? Can I still open a locked app?

After a failed Face ID attempt, iOS will offer to authenticate with your device passcode as a fallback. This is by design — Apple wants you to have a reliable backup in case of injury, poor lighting, or hardware issues.

Can I lock the Photos app itself with Face ID?

Yes, on iOS 18 you can require Face ID for the entire Photos app using the long-press method. This adds a layer beyond just the Hidden album and prevents any casual browsing of your library.

Do locked apps still sync with iCloud?

Yes. Locking an app with Face ID only affects on-device access. iCloud sync, background refresh, and notifications continue to function normally. Your data stays up to date across all your Apple devices.

Is Face ID app locking available on iPad?

Yes, iPadOS 18 supports the same Require Face ID and Hide and Require Face ID features on Face ID-equipped iPads (iPad Pro 11-inch and 12.9-inch models from 2018 onward).

Final Thoughts

Locking apps and photos with Face ID is one of the fastest privacy upgrades you can make on an iPhone. In under two minutes, you can shield banking, messaging, dating, and health apps from anyone who happens to pick up your unlocked device. Combined with the Hidden album, locked Notes, and good passcode hygiene, you have a genuinely robust local privacy setup — no additional apps or subscriptions required.

Start with the apps that hold your most sensitive data, expand from there, and revisit your setup every few months as iOS adds new privacy tools. Your future self — the one whose phone gets borrowed at a party or handed to a stranger for a quick photo — will thank you.