From: Bryce <wilcoxb@nag.cs.colorado.edu>
Date: Mon, 16 Oct 95 16:58:07 PDT
To: Nathan Loofbourrow <loofbour@cis.ohio-state.edu>
Subject: Re: mental cryptography
In-Reply-To: <199510141243.IAA27588@hammond.cis.ohio-state.edu>
Message-ID: <199510162357.RAA28204@nag.cs.colorado.edu>
MIME-Version: 1.0
Content-Type: text/plain



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 Nathan Loofbourrow <loofbour@cis.ohio-state.edu>
> 
> Of course, perhaps this encourages someone to steal your card and
> incapacitate you before you can report it. That's why we have
> PINs... so that someone can steal your card, threaten you until you
> reveal your PIN, and then incapacitate you... Hmm...
> 
> Even with a weak PIN system for authentication, you can always provide
> a "duress" PIN, right?


I can think of two purposes for "duress codes":  1.   To yield 
little loot to the thief, thus leaving more of it in your possession
and discouraging theft.  2.  To summon help in the form of physical
force.


The first use is susceptible to the "give me more or I cut off your
little finger" approach.  So we are again faced with the great
importance of a good police force.


Let us not forget about the value of such when constructing our future
visions.


Bryce
signatures follow


            "To strive, to seek, to find and not to yield."   
    <a href="http://ugrad-www.cs.colorado.edu/~wilcoxb/Niche.html">

                          bryce@colorado.edu                   </a>

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