Yeah, I know it's a loosing battle with techies! :)
It's not only with techies. With any PostScript printer you can simply "print to a file" and have a fully functional electronic PostScript document. You can download dozens of free PDF printer drivers, and none of those is forced to have a "PDF" string in the printer or port name. And what do you do if one of your customers has a printer whose driver has a "PDF" in its name? (E.g. a PDF-enabled printer, which natively supports PDF documents.) Even if you had a flawless fake-vs-real printer detector, one could always print and scan or color-copy, as you say yourself. So why are you even bothering? It looks like you're putting effort into reaching a solution which: - Will be easily circumvented, - Will piss off users due to false positives (e.g. ordinary printers with a "PDF" string in their names), and - Doesn't really need to be circumvented due to the possibilities of scanning. Is that really worth the effort? Don't take this the wrong way, I'm really interested, after all I don't know what you need this for. But I guess the only way to get copy-protected documents is to use suitable technology (holograms, watermarks, etc.), like modern money printing machines do, isn't it? Fabian =================================== This list is hosted by DevelopMentorĀ® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com