01-22-2012, 01:36 PM
If the data is "top-secret" somebody can make an .exe program that shows the pages (raster images would be the easiest way to be used in standalone executable), and the program can disable Printscreen button, also any known OCR applications that are loaded in the memory, etc.
Another option is to use a Flash application style, as this is very popular way to prevent the users from mass-copying documents on webpages. In this case the user's browser will be used to show the flash document.
It depends how "deep" is the problem with security. And regarding we are bounded to the PDF format there aren't many options to keep the document pleasantly readable for the human, and difficult to be recognized by OCR software.
Another option is to use a Flash application style, as this is very popular way to prevent the users from mass-copying documents on webpages. In this case the user's browser will be used to show the flash document.
It depends how "deep" is the problem with security. And regarding we are bounded to the PDF format there aren't many options to keep the document pleasantly readable for the human, and difficult to be recognized by OCR software.