| re: PDF File Restrictions
Sorry, but you're out of luck there - PDF won't do that for you. You can stop people from copying the text out of the file, but not the file itself. And you can't restrict, where it's moved to with a simple PDF file (at least, not without seriously interfering with the OS, which you really shouldn't do, even if you should be able to).
What you're saying sounds quite like DRM for music, so you could always try to write a format that combines parts of PDF with parts of DRM, but that won't be readable with a normal PDF viewer, I would think. You'd have to write an own viewer and maybe encapsulate the PDF in your new format. But it would be a lot of work and if your documents are so interesting, that people want to copy them anyway, probably someone will find a way.
What you can do is add a licence to the file, forbidding people from doing those things. That licence itself will not stop them, but it would make it illegal (if the licence is valid) and therefore violating the licence would be a criminal offence and can be dealt with as such.
I do wonder however, what sort of file would be worth such effort.
Greetings,
Nepomuk
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