REPOST: Re: Captchas
From: Jean-Luc Cooke (jlcooke_at_engsoc.org)
Date: 10/28/05
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Date: 28 Oct 2005 17:20:01 GMT
stanislav shalunov <shalunov@internet2.edu> wrote:
> P.S. Why sci.crypt?
Because I see this problem as being at least somewhat related to
information theory. "How do you get information from human mind to
computer on the internet in a way that you know it hasn't been replayed
or tampered with?"
Well, if motion captchas or interactive ones were to be written. You'd
have to send back how the user interacted with the captcha (mouse
clicks, movments, etc). Now, how can you write a program to tell this
was human?
Yes the whole Turing Test comes to mind. But a captcha isn't a turing
test on its own. A human interrogating some one/thing to see if it is a
human would be a bit more thourogh than a rochoc test.
JLC
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From: Jean-Luc Cooke <jlcooke@engsoc.org>
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Subject: Cancel "Re: Captchas"
Newsgroups: sci.crypt
Date: Fri, 28 Oct 2005 18:49:44 GMT
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