PDF is blocked for printing, etc. OK for acroread (it behaves as expected), but KPDF allows me to print it, even if it is protected! Why?
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From: Elias Gabriel Amaral da Silva on 19 Apr 2010 13:40 2010/4/19 Merciadri Luca <Luca.Merciadri(a)student.ulg.ac.be>: > I know that it is _always_ possible (with some determination) to extract > content, by some way, of a PDF (even if screenshots were to never work, > you can still use a camera). Principally, the most important aspects of Or paper and pencil. > such security features are that they are tricky (for some users only, I > agree) to unlock, and that they are consequently repulsive at prima facie. I know that for some cases this 'restriction through inconvenience' is sufficient in practice, but this should not be achievable with free software, even if legitimate. A suggestion: be physically present when that person examine the file, and threaten him or her with violence at a mere attempt of data recording. (But you still face the problem of memory, that is fortunately harder to overcome) -- Elias Gabriel Amaral da Silva <tolkiendili(a)gmail.com> -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/s2kda2c618b1004191035yb924db9iafa0bd119bd3d303(a)mail.gmail.com |