Why use a separate PIN for one PDF if the app is already protected?
At first, protecting the whole app may seem sufficient. If Face ID, Touch ID, or an additional PIN is required before entry, why add another code to a single file?
The answer is separation of access.
Not every document in the archive has the same sensitivity. One app may contain manuals, study material, receipts, and one or two files that deserve stricter treatment.
Once someone has legitimately entered the app, a file-specific PIN can still keep a selected document behind another checkpoint.
This is useful if you open the app in front of another person to show an ordinary file but do not want a sensitive agreement or financial document to be opened without another code.
It is similar to having a safe inside an already locked room.
PrivateProScanner lets you use an individual four-digit PIN for selected PDFs rather than forcing every document to use the same strict rule.
That keeps ordinary files convenient while allowing particularly sensitive ones to receive extra protection.
A separate PIN can also help the owner mentally classify a file as something that deserves more deliberate handling.
This is one of the advantages of layered protection: not all data have to be treated exactly the same way.
Download PrivateProScanner on your iPhone or iPad — a modern scanner built with privacy in mind.
Scan documents, create PDFs, keep important files and private photos locally, and use additional protection layers including AES-256, Face ID / Touch ID, and PIN controls.
PrivateProScannerPDF Scanner · AES-256Download on the App Store →