I hope we don't have to wait that long for a solution to this one, and I hope it is valid.
In truth there is no iron-clad solution. The 'save as...' with security options works pretty well... and it does make it
inconvenient for someone who can read the content to actually copy the content. Inconvenient, but not impossible.
I have to admit, opening the pdf with a hex-editor provided zero help... as the contents are encrypted. So it's either break the password or use OCR on a printout.
Still, requiring such tricks helps to emphasize the (undesirable) illegality of such an undertaking... and makes the author's intent quite clear.
