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Do you know of a way to turn off the "Save As" function in Acrobat Reader?

What I'm doing:
Distributing a CD-ROM to 500 customers with a PDF document on it. The PDF
is "wrapped" in an install script so that users can't
just insert the CD-ROM into their PC and open the PDF. To get to the PDF,
they need to run the install program, and the install program
checks to make sure they have a security device (which we provide to them)
attached to their computer.

Why I'm doing that:
So no one without the security device attached to their computer can open
the PDF.

My problem:
Once someone has opened the PDF, I can't think of a way to prevent them
from selecting Save As from the File menu and saving a copy
of the PDF. This copy could be distributed freely, since it would not
require the security device in order to be opened.

What I can't do:
There are two possible solutions that AREN'T options for me:
1. I can't use Distiller's security settings to password-protect the PDF.
(Anyone willing to distribute an illegal copy of the PDF would not hesitate
to
include the password when they did so!)
2. I can't disable all access to the menus in Acrobat Reader, since I do
want licensed users to be able to print the document for their own
use.

Any ideas?


thanks for your help -
linda


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