Yakov Shafranovich wrote:
The WAI Protocols and Formats Working Group of the World Wide Consortium
(W3C) has published a working draft on Turing tests and accessibility
issues. This is in particular very relevant to C/R systems. The current
version of the draft is available at:
http://www.w3.org/TR/turingtest/
Comments are welcome and we need to also figure out how this is relevant
to our requirements.
Just to add something to this, Matt McCay who is the author of this
draft, posted a reference on his weblog about how a spammer was able to
get human volunteers to visit a porn site and defeat the CAPTHAS. The
weblog comment is here:
http://www.bestkungfu.com/archive/?id=257
and the original article here:
http://www.post-gazette.com/pg/03278/228349.stm
Relevant quote:
--------snip---------
But at least one potential spammer managed to crack the CAPTCHA test.
Someone designed a software robot that would fill out a registration
form and, when confronted with a CAPTCHA test, would post it on a free
porn site. Visitors to the porn site would be asked to complete the test
before they could view more pornography, and the software robot would
use their answer to complete the e-mail registration.
--------snip---------
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