I have been told that if you password protect an Adobe PDF document there are software programs that can unlock it. I sell horse racing tips from my website www.racetips.club but I want to give my customers a unique password and lock the document. Is this a waste of time. i am trying to prevent the document from being emailed around to other non-customers. This happens a lot when people subscribe to sites such as mine. i suppose that they could pass on the password as well but it would be an extra level of control. Are there any other security features that would stop people passing on my PDF file.
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