Preventive action copy of the pdf file

Hello

I created a PDF book for students.

Students get the book on my site.

The student can enter the answers to homework in the book and send it to the teacher.

On the first page, it enters:

-email for teachers

-name of teachers

-Student e-mail

-names of the students

and saves the pdf file

with thees fields the book knows where to send responses

The teacher can then refer the rank.

All work with FDF files.

I need to warn students to simply copy the book and do not buy it?

What is the way to do this?

Thank you.

Dan

There is absolutely no way.

You may want to consider DRM (Digital Rights Management), but this is likely to be off-budget. DRM does not stop a file to be copied, but retains the copy useless.

Probably the best solution is to consider a server solution to stamp the student's name in the book. But who will probably not stop most of them.

Tags: Acrobat

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