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

Handing your unlocked iPhone to a friend to show them a funny meme shouldn't feel like a security risk — but for most people, it is. Bank apps, private messages, sensitive photos, and journal entries all sit one swipe away. The good news: modern iPhones give you powerful, built-in ways to lock individual apps and specific photos behind Face ID, so a borrowed device stays private without you hovering nervously.

This guide walks you through every native method to lock apps and photos with Face ID, plus the third-party options that fill the gaps. By the end, you'll have a personalized privacy setup that takes less than 10 minutes to configure.

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

Locking an app or photo with Face ID means the content requires a successful facial authentication (or your device passcode as a fallback) before it can be viewed, even after your iPhone is already unlocked. It's a second layer of security built on top of your main lock screen.

Before iOS 18, this feature was limited to a handful of first-party apps like Notes and a few banking apps that opted in. Starting with iOS 18, Apple made app-level Face ID locking a system-wide feature that works with almost any app on your device. Combined with the Hidden and Recently Deleted albums in Photos — which are also Face ID protected — you now have granular control over what's visible on your phone.

Why Lock Individual Apps Instead of Just Your iPhone?

• Shared moments: You want to hand your phone to a child, colleague, or stranger without exposing private data.
• Notifications privacy: Locked apps hide their content from Spotlight search, Siri suggestions, and even notification previews.
• Financial protection: If someone gets your unlocked phone momentarily, they still can't open your banking app.
• Peace of mind: Sensitive photos, health data, and journal entries stay yours even when the device is unlocked.

Requirements: What You Need Before You Start

To lock apps and photos with Face ID using Apple's built-in tools, you need:

1. An iPhone with Face ID (iPhone X or newer) — or Touch ID on supported models, which uses the same settings menus.
2. iOS 18 or later for system-wide app locking. Earlier versions only support Face ID on specific apps like Notes.
3. Face ID already set up in Settings > Face ID & Passcode.
4. A device passcode (used as the fallback when Face ID fails).

How to Lock Any App with Face ID on iOS 18

iOS 18 introduced a native "Require Face ID" option that works on virtually every app installed on your iPhone. Here's the exact process:

1. Go to your Home Screen or App Library and find the app you want to lock.
2. Touch and hold the app icon until a context menu appears.
3. Tap Require Face ID (on Touch ID devices, this reads "Require Touch ID").
4. A confirmation sheet slides up. Tap Require Face ID again to confirm.
5. Authenticate with Face ID to lock in the change.

That's it. The next time you or anyone else taps that app, Face ID will scan before the app opens. If authentication fails, iOS falls back to the passcode.

How to Unlock or Remove Face ID from an App

To reverse the process:

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

How to Hide Apps Completely with Face ID

Locking is one thing — hiding is stronger. iOS 18 also lets you move apps to a special "Hidden" folder in the App Library that requires Face ID to even see.

1. Touch and hold the app icon on your Home Screen.
2. Tap Require Face ID.
3. On the confirmation sheet, tap Hide and Require Face ID instead of just "Require Face ID."
4. Confirm and authenticate.

The app disappears from your Home Screen, from Spotlight search results, from Siri suggestions, and from notification previews. To access it, open the App Library, scroll to the bottom, tap the Hidden folder, and authenticate with Face ID.

Which Apps Can and Can't Be Hidden?

Most third-party apps can be hidden, but Apple restricts hiding for certain system apps (Phone, Messages, Settings, Safari, etc.) to prevent lockout scenarios. If "Hide and Require Face ID" is grayed out, the app isn't eligible.

How to Lock Photos with Face ID

Apple's Photos app has two built-in albums that are automatically Face ID protected in iOS 16 and later: Hidden and Recently Deleted. Any photo or video you move into the Hidden album disappears from your main library and requires authentication to view.

Step-by-Step: Move a Photo 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-dot circle icon in the top right).
4. Select Hide.
5. Confirm by tapping Hide Photo.

To hide multiple photos at once, tap Select in the album view, choose your photos, tap the More button, and pick Hide.

Confirming Face ID Is Protecting the Hidden Album

1. Open Settings > Apps > Photos (or Settings > Photos on older iOS versions).
2. Scroll to Use Face ID and toggle it on.
3. Also make sure Show Hidden Album is on if you want the album visible in the Utilities section — otherwise it stays completely invisible.

With Use Face ID enabled, both the Hidden and Recently Deleted albums require authentication every time they're opened.

Viewing Your Hidden Photos

1. Open Photos and scroll down to the Utilities section.
2. Tap Hidden.
3. Authenticate with Face ID.

Comparison: Native iOS Locking vs. Third-Party Apps

iOS's built-in tools cover most needs, but some users want extra features like decoy passwords, break-in alerts, or per-album locking within Photos. Here's how the options stack up:

Feature	iOS 18 Native	Third-Party Vault Apps
Lock any app with Face ID	Yes	No (only their own vault)
Hide apps from Home Screen & Search	Yes	No
Hidden Photos album	Yes (single album)	Yes (multiple vaults)
Decoy passwords / fake vaults	No	Often yes
Break-in photo alerts	No	Yes (in premium tiers)
Cost	Free (built in)	$2–$40/year typical
Trust level	High (Apple)	Varies — check reviews

Pros and Cons of Native iOS Locking

Pros:

• Free and built directly into iOS.
• No extra app to trust with your data.
• Works system-wide, including with search and Siri.
• Automatic security updates from Apple.

Cons:

• Only one Hidden album — no per-folder locking.
• No break-in alerts or intruder photos.
• Requires iOS 18 for system-wide app locking.

Pros and Cons of Third-Party Vault Apps

Pros:

• Multiple encrypted albums or vaults.
• Decoy modes to protect against coerced unlocks.
• Cross-device sync options.

Cons:

• Requires trusting a third-party developer with sensitive media.
• Subscription fees.
• Photos imported into vault apps may still leave copies in the main library unless you delete them manually.

Advanced Privacy: Locking Notifications and Search Results

Locking an app is only half the battle if its notifications still spill sensitive content on your lock screen. Combine Face ID app locks with these settings:

1. Go to Settings > Notifications and select the app.
2. Set Show Previews to When Unlocked or Never.
3. Go to Settings > Siri & Search, tap the app, and disable Show Content in Search and Show on Lock Screen.

These changes ensure that even a glance at your lock screen won't reveal a message preview from your banking or dating app.

Common Problems and How to Fix Them

"Require Face ID" Option Is Missing

This usually means you're running iOS 17 or earlier. Update to iOS 18: Settings > General > Software Update.

Face ID Keeps Failing on a Locked App

• Clean the TrueDepth camera notch or Dynamic Island area.
• Go to Settings > Face ID & Passcode and tap Set Up an Alternate Appearance.
• Restart your iPhone if failures persist.

Hidden Album Still Shows Up

Go to Settings > Photos and toggle off Show Hidden Album. The album vanishes from the Utilities section entirely.

Beyond the Device: Thinking About Digital Privacy Holistically

Face ID locks are excellent for physical device security, but they don't protect you when you click a suspicious link, share an unshortened tracking URL, or connect to an unsafe network. A well-rounded privacy setup pairs on-device locks with safer browsing habits: use encrypted DNS in Settings > General > About > Configuration Profile, keep iOS updated, and be careful about the links you share and click.

If you share links often — for work, on social media, or with clients — consider using a privacy-focused link management tool like Lunyb to shorten and control your URLs without exposing your original destinations to trackers. You can learn more in our honest Lunyb review or compare it to alternatives in the 2026 URL shortener buyer's guide.

Quick Checklist: Your 10-Minute Face ID Privacy Setup

1. Update to iOS 18 or later.
2. Confirm Face ID is set up with an alternate appearance for reliability.
3. Long-press your banking, messaging, health, and journal apps → Require Face ID.
4. Hide any apps you don't want appearing in Spotlight or the Home Screen.
5. Enable Use Face ID in Settings > Photos.
6. Move sensitive photos into the Hidden album.
7. Turn off Show Hidden Album so the folder itself is invisible.
8. Set notification previews to "When Unlocked" or "Never" for sensitive apps.

Frequently Asked Questions

Can I lock apps with Face ID on an iPhone running iOS 17 or older?

Not system-wide. Before iOS 18, only individual apps that chose to implement Face ID (like Notes, some banking apps, and password managers) supported it. To lock any app, update to iOS 18 or later. If you can't update, third-party vault apps can protect specific media, but they can't lock other apps' interfaces.

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

No — Face ID app locks and notification previews are separate settings. You need to go to Settings > Notifications for each app and change Show Previews to "When Unlocked" or "Never" to hide notification content on the lock screen.

Can someone bypass Face ID by using my passcode?

Yes. iOS always allows the device passcode as a fallback for Face ID, including on locked apps. This is a deliberate accessibility feature. If your passcode is known to someone else, they can still open Face-ID-locked apps. Use a strong 6-digit or alphanumeric passcode and never share it.

Are photos in the Hidden album encrypted?

Photos on your iPhone are already encrypted at rest by iOS whenever your device is locked. The Hidden album adds an access-control layer (Face ID authentication) but doesn't change the underlying encryption. If iCloud Photos is enabled, hidden photos also sync to iCloud — where they're encrypted, but not with end-to-end encryption unless you enable Advanced Data Protection in your Apple ID settings.

What happens if Face ID stops working — am I locked out of my apps forever?

No. Every Face-ID-locked app falls back to your device passcode. If Face ID fails (bad lighting, hardware issue, or a mask), just tap "Enter Passcode" on the authentication screen and enter your regular iPhone passcode to unlock the app.