[Hidden-tech] PDF Security

[Jan Werner]

Unless you want to invest BIG bucks in a content serving system (which 
negates most benefits of distributing books as PDF files), you can't 
prevent people from sharing the files themselves. The best you can do is 
encrypt the content and place restrictions on various activities.

PDF-Xchange Pro, which I use to create, edit and read PDF documents, 
offers fairly granular permissions for printing, editing and content 
extraction. You can assign one password to open a document and another 
to modify permissions.

Just how secure PDF passwords are is questionable, given the large 
number of sites claiming to provide PDF password removal, and in any 
case, you can't prevent someone from passing along passwords with files, 
nor can you prevent screen capture of individual pages.

Password encryption should be enough to prevent abuse by casual readers, 
but will not deter real experts from extracting content.

Jan Werner
___________

On 7/17/2020 12:38 PM, Fred Levine via Hidden-discuss wrote:
> We have a client who wants to sell her book as a PDF. Is anyone aware of a way to copy-protect the PDF that it can't be shared or duplicated? I assume there's a way to do this, but am not aware of one.
> 
> Thanks,
> Fred
> 
> 
> 
> Fred Levine
> Small Batch Books
> 493 S. Pleasant St.
> Amherst, MA 01002
> 413.230.3943
> 
> 
> 
> 
> 
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