Protection for Public PDF Files
The video talks about how to work with protected documents located on a web site in the public domain that are free to download.
The end user (reader) needs to download and install the viewer program, similar to Adobe Reader, and also enter the serial number received from the owner (publisher) of the content. After this procedure, the files protected in one workspace can be opened much like a typical PDF file.
The publisher can configure access to parts of the content using different workspaces. Even when the validity of the workspace is expired, you can buy, generate and edit Serial Numbers. Watch the video to learn all the details: