I am having problens setting up encryption for a book I wrote......what is the best way to prevent people from just sending the book to there whole contact list?
Please post the name of the Adobe program you are using so this message may be moved to that forum
Once a file is downloaded people can do pretty much whatever they want with it. The best you can do is DRM or digital watermarking, See link below.
Moving this thread from Community Help to the non-technical, non-product related forum Lounge.
DRM may work but can cost tens of thousands of dollars. Generally done by big publishers.