I have been looking for a solution to protect eBooks that we are selling. I know that DRM solution is in general a bad idea but in this case we must have some kind of protection (no we really do!). I have found PDF OwnerGuard by Armjisoft, which is a solution to lock a PDF file to a single computer ID. Does anyone have any other suggestion for DRM protecting PDF files? I would gladly hear comments from other users who either used the above software or any similar software for protecting PDF. /Thanks
I've used LockLizard SafeGuard before, to secure my company documents, but due to the restrictions and my user hassles I've switched to PDF OwnerGuard. Here is some of the differences which makes me change my DRM provider 1 ) Users want to access their protected PDFs using standard Adobe Reader not a custom Viewer like SafeGaurd Secure Viewer. 2 ) SafeGuard secure viewer did not support all PDF features. Like 3D PDFs, using videos. Flash , Forms, Attachments and ... 3 ) SafeGuard secure viewer did not support all features of Adobe Reader like Text commenting, Voice commenting, Saving comments, Java scripts ... PDF OwnerGuard License Manager is a transparent DRM layer for users and users are able to access the protected PDFs like normal PDFs using standard Adobe Reader.