Gunnar Wolf wrote: > Merciadri Luca dijo [Mon, Apr 19, 2010 at 05:32:51PM +0200]: > > > Thing is, PDF is a printing-oriented format. It is a close descendent > of PostScript, a full-fledged programming language, but geared towards > printers. The main point that makes PDF a more convenient format is > that Acrobat made a big campaign to distribute its PDF reader program. > As you say. > As you quote, others have told you the PDF-provided security is > fake. It is just a flag flipped to tell the reader program to pretty > please make life miserable for the user. > Yes, but it is often sufficient to prevent _beginners_ from hacking the whole stuff. > What do you want to achieve with this _real_ protection you say? > See my other messages. I am/was encountering a special situation. > Whatever can be displayed on screen can be captured (i.e. with the > common "PrtScr" keybinding in many environments). If you want to > distribute material and make it hellish to your users to print it, > copy from it or use it in any useful way, why don't you send the > document as a .jpg file? > With such files (.jpg ones) they can print it directly, can't they?
-- Merciadri Luca See http://www.student.montefiore.ulg.ac.be/~merciadri/ I use PGP. If there is an incompatibility problem with your mail client, please contact me. When making your choices in life, do not forget to live. (Samuel Johnson)
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