Discussion on question by jackgu1988: How can I prevent a user from copying files on another hard drive?

if you can read a file, by definition you can copy it. you can film the screen while scrolling, replace the screen by a recording device, record the screen reader reading the files, ...

I presume you're going to have physical security presence to back up the technical measures, right? If so, I wouldn't proceed too far past the first answer.