Ray Rashif <schivmeis...@gmail.com> writes:

> On 8 August 2013 17:51, Rainer M Krug <rai...@krugs.de> wrote:
>> Just one word of caution: if you can see the text on screen, you can
>> extract it by taking a screenshot and using ocr (optical character
>> recognition) and nothing will stop you. So this just makes it slightly
>> more difficult to get the text.
> What's more, if I'm not wrong, encryption depends on the reader having
> support, so you can effectively render encryption useless by using a
> very old reader and PDF format. Even GhostScript lets you bypass
> encryption, though not intentionally.

I might be wrong, but I think even okular had an option (!) to enable or
disable to respect the restrictions.

> It's really all about preventing frequent abuse of documents by lay
> people. Someone with the intent _will_ get your text somehow or
> another. There are many tools that person could employ.

Absolutely - but I think the problem are not the lay people, but rather
the "expert copier" who knows how to do it.



> --
> GPG/PGP ID: C0711BF1

Rainer M. Krug

email: RMKrug<at>gmail<dot>com

Reply via email to