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Old 03-12-2009, 05:55 AM   #2
Benwiggy
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Join Date: Apr 2007
Location: London
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This would be an extremely "non-trivial" thing to achieve.
Such a thing is way outside the JavaScript capabilities of a PDF document. In any case, not all Readers run Javascripts in PDFs. Your code would need to run on any PDF Reader, on any OS.
That level of control over another person's computer is akin to trojans/viruses, and therefore the object of much that computer security tries to defend against.
Some people have outgoing firewalls to stop applications 'phoning home', which is often seen as bad manners.

Adobe does produce its own DRM for licencing PDFs to particular users/computers, called "Digital Editions". However, like all DRM, it can and has been cracked.
Ultimately, the nature of computers and data is such that once you have distributed electronic data to another computer over which you have no control, then it is gone from your control.
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