I can see the point now, but there is a huge risk of printed matter going walkies. Where I work if you have printed matter that is highly confidential or potentially damaging to your company if it leaked, it is watermarked across with your name - that stops anyone photocopying it etc. Of course if they really want to they could write/type it out longhand, but that tends to stop things being leaked. The other way things are done is a reading room where nothing leaves it, but that is totally impractical in an aviation world as the cockpit is the reading room.