There are many different methods that one can employ to protect PDF documents and the choice of which to use really depends on your target audienc how effective you want that protection to be. Some of the methods explained here vary from easily exploted deterrents to full blown WW2 encryption and access control.

What kind of copy protection software do you need?

1. Prevent changes to PDF document
2. Prevent printing of PDF document
3. Password protect PDF document
4. Set expire date on PDF document
5. Control access to PDF document
6. Limit number of prints of PDF document
7. Limit number of views of PDF document
8. Prevent copy of PDF document
9. Prevent unauthorized sharing of PDF document

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