I have a PDF file, which is a course, our company intends to make it available to users of a certain course online.
To do this, I have to add password to open the file on the person's machine, and a custom footer, something like this:
"This copy is licensed to Thiago A. Klein, Member ID: 56789. Copying, copying or sale is prohibited."
Does anyone have an idea of a Gem or Service that does this?