[5713] in www-talk@info.cern.ch
Watermarking (was Re: Content Provider Problem?)
daemon@ATHENA.MIT.EDU (Jim Davis)
Mon Sep 19 16:30:37 1994
Date: Mon, 19 Sep 1994 22:20:16 +0200
Errors-To: listmaster@www0.cern.ch
Errors-To: listmaster@www0.cern.ch
Reply-To: davis@DRI.cornell.edu
From: Jim Davis <davis@DRI.cornell.edu>
To: Multiple recipients of list <www-talk@www0.cern.ch>
People at Bell Labs have published on techniques for making
small alterations to PostScript files such that each version
of the resulting document is unique but still readable.
These were, I think, but only recently mentioned on this
very list, unless my memory misleads me:
ftp://ftp.research.att.com/dist/brassil/infocom94.ps and /docmark2.ps
