Hiding and locking are different requests
This guide answers “put a password on my album.” If you only want photos out of the main grid, see how to hide photos on iPhone. Hiding changes what you see. Locking asks you to authenticate before Hidden opens.
They work together, but they are not the same thing. A hidden photo is still part of your normal photo library. The lock protects one known place on the phone.
What iOS gives you natively
On iOS 16 and later, the Hidden album uses Face ID or Touch ID. Open Photos, select the pictures, tap the three-dot menu, and choose Hide. Find them under Albums › Utilities › Hidden. The phone asks you to authenticate before opening it.
If Hidden is not visible, turn on Settings › Apps › Photos › Show Hidden Album. On older iOS versions, this is Settings › Photos. This setting only shows or hides the album row. It does not create a separate password. If Face ID or Touch ID is unavailable, iPhone uses the device passcode.
What that lock actually is
It is your iPhone’s lock, used again inside Photos. That helps when you hand an unlocked phone to a friend: they cannot casually open Hidden without your face, finger, or passcode.
It is not a second secret. Anyone who knows your device passcode can authenticate. This is a useful device lock, not an independent boundary for private photos.
What it does not do
It does not give the album a separate PIN. It does not remove photos from your library or stop iCloud Photos sync. It also does not give you plausible deniability: Hidden is a familiar iPhone feature, even if you hide its row.
It does not clean up copies either. A photo may already be shared, saved elsewhere, or left in Recently Deleted. One album lock cannot recall those copies.
When the native lock is enough
The native lock is enough for ordinary privacy: keeping personal photos out of casual scrolling on a borrowed phone. It is built in and needs no new workflow.
Choose a separate encrypted vault when your phone passcode should not open the collection too. It also suits photos you do not want in the main library. Sealby keeps imported photos in an encrypted vault with its own PIN, rather than in Photos or iCloud Photos.