protect from printing

[tomh78620463]

I created a PDF file and protected from printing. It works on my PC. When I send out the file through email the receiver was able to print it. I want to know how to protect the sent out file from printing?

[try67 · Accepted solution]

You would need to use DRM protection (which is very, very expensive) to do it.
What you did should have been enough, but unfortunately there are many (non-Adobe) PDF viewers out there that do not enforce the security restrictions as they should.