Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!ig!ames!amdahl!pyramid!ncc!myrias!alberta!cdshaw
From: cdshaw@alberta.UUCP (Chris Shaw)
Newsgroups: comp.graphics
Subject: Re: Color reproductions (color copying)
Keywords: color xeroxgraphy, image processing
Message-ID: <2235@pembina.UUCP>
Date: 24 Apr 89 21:03:41 GMT
References: <3177@eos.UUCP> <15020@gryphon.COM>
Reply-To: cdshaw@pembina.UUCP (Chris Shaw)
Organization: U. of Alberta, Edmonton, Alberta, Canada
Lines: 22

In article <15020@gryphon.COM> keithd@gryphon.COM (Keith Doyle) writes:
>money, ID badges, and whatever else must
>remain secure from color-xeroxing, must go holographic.  (At least
>until the color holo-copiers arrive :-).  It may mean that
>$1 bills are going to get more expensive to print.

Well... more like $100 bills are going to get more expensive. $1 bills aren't
worth it. Another technique is to do what the Europeans do & have a clear spot
on the bill which exposes a distinctive watermark on the paper. I don't imagine
that a colour photocopier can duplicate that, unless it's some sort of
projection system. Also, plain paper is out, no matter what.

The availability of cheap processing power in just about everything is going to
radically change how we live, anyway. 

>Keith Doyle


-- 
Chris Shaw    cdshaw@alberta.UUCP (or via watmath or ubc-vision)
University of Alberta
CatchPhrase: Bogus as HELL !