Keep photos private when you hand someone your phone
You hand your phone to a friend to show one photo, and suddenly they're swiping through everything. It's one of the most common ways private photos get seen — not by hackers, but by people standing right next to you.
Keeping photos private in this moment is less about encryption math and more about what's visible when someone is holding your unlocked phone.
The real risk is a swipe, not a hack
Once your phone is unlocked and in someone else's hands, every photo in your Camera Roll is one swipe away. Even a locked vault app can be a problem: if the person knows it's there and asks you to open it, a normal PIN lock doesn't give you a graceful way out.
Why built-in iOS options fall short here
- The Camera Roll shows everything — there's no "show just this one photo" mode when you hand the phone over.
- The Hidden album can be revealed by anyone who opens Photos and knows where to look.
- A standard locked app still opens to your real content the moment you (or someone watching) types the PIN.
Arca · Decoy vault
How Arca handles it: a decoy that opens on command
Arca keeps your sensitive photos out of the Camera Roll entirely, in an encrypted vault. And if you're ever asked to open Arca, the decoy vault lets you enter a second PIN that opens a separate, harmless vault — your real photos stay hidden and encrypted, indistinguishable from the outside.
- 1
Move sensitive photos into Arca so they leave your Camera Roll and become encrypted.
- 2
Set up a decoy PIN in Settings and add a few innocuous photos to the decoy vault.
- 3
If you're ever asked to unlock Arca, enter the decoy PIN — the real vault never appears.
Questions
Can someone tell I have a decoy vault? +
No. The decoy vault opens with its own PIN and looks like an ordinary vault. There's no visible indicator that a second, real vault exists.
Is hiding photos this way legal? +
Using a private vault is legal in most places, but laws around compelled device unlocking vary by country and situation. This isn't legal advice — understand your local laws.
Related reading
Your photos. Truly private.
Download Arca and lock your first photos away in under a minute. No account, no cloud, no one but you.
Free to download · iPhone · iOS 18+