Seeking Security Program for PDFs

Hi there,

I've been using security programs for my PDF files so people can't open it unless they have a key or password & can't move it from one computer to another.

I do give them permissions to print, so that has to be an option.

The first program was very buggy & not user friendly. The second one I have to pay for per month & sometimes I have to generate the key twice in order for the customer to be able to open the file & for some reason I never get the keys.

So I thought, what if Open Source has something.

Does anyone know of anything that's really good & user friendly both for me & the customer?

Thanks & have a great day!


Michelle