I need help - I can help - Can I expire a pdf after a certain date?

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Can I expire a pdf after a certain date?

Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=2273
Printed Date: 02 May 24 at 2:18AM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com

Topic: Can I expire a pdf after a certain date?

Posted By: ExchangeViews
Subject: Can I expire a pdf after a certain date?
Date Posted: 23 May 12 at 11:20AM

Can I expire a pdf after a certain date with encryption method or can we limit the number of print for a pdf file? Suppose only 5 prints are allowed.

Replies:

Posted By: Ingo
Date Posted: 23 May 12 at 11:28AM

You can add a custom field (similar to meta data fields).
There you can modify a value after each printout.
Before printout you can check this value.
How to set the security settings from inside the pdf i don't know.
For this all you need embedded javascript-code.
The other thing: The users can stop javascript executed from the pdf-reader as a security option.
No good news for you.
For my opinion there isn't any save solution for your needs.

Cheers, Ingo

Posted By: ADev
Date Posted: 27 May 12 at 9:30PM

or
Encrypt the pdf file (password for open and password for changes and only your program knows it). You write a program that will be opened, printed, and save / check somewhere (registry?, database?) number of times the file was printed.

Regards