Filled forms are still editable after creating a signature

[viktork79824838]

Dear Adobe,

I am using the Acrobat Reader Mobile ("Adobe Acrobat Reader: PDF Viewer, Editor & Creator") for signing and filling simple PDF forms. I have noticed that after filling, signing, saving and sharing the form via the e-mail the shared PDF/form is still editable (despite the notice that signed and saved forms will not be editable after saving).

The application version is 20.0.1.11139 and the Android version is 7.1.2.

Can you help me in this matter please?

Best regards

Viktor

[Test Screen Name]

Non-Adobe apps may still allow editing. Of course, this will leave the signature as invalid, so it is easy to detect when validating. (Think of the locking after signing as a convenience to reduce errors, not a kind of security).

[viktork79824838]

I have opened the signed and filled PDF in Adobe Acrobat Pro X and the fields were not read only, even in the mobile app the document fields could be fully editable again. So it seems the document is not locked in any way as it should be according to the displayed information/warning.

[Fudge]

Did anyone ever find a solution to this? I am having the same issues.

[viktork79824838]

Hi,

as I know, this is by design (the form needs to be flattened for instance and it is not). I ended up using another app to sign and flatten/lock the PDF form.

Regards

Viktor

[Test Screen Name]

Hmm, coming back to the original problem - signed on the mobile app - locking is a property of digital signatures. Digital signatures - with a certificate - can't be done in the mobile app, so far as I know. So, I would expect locking after signing (really, just stamping or scribbling) in the mobile app.

[Fudge]

I wish it were that simple, seems it might have been on previous versions...

I imagine it to be a bug in the app if Viktor had the same issue.