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From: Emma Duke-Williams
Date: Mar 14, 2007 10:10AM

On 3/14/07, zara < <EMAIL REMOVED> > wrote:
> Hi,
<snipped>
>
> Very briefly, in English :
>
> In light of the increasing capacity of machines to deal with current CAPTCHAs, researchers at Microsoft have imagined a new method of authentification. Rather than asking the user to recognise images of letters and numbers, the system would ask him or her to distinguish photos of cats and dogs. A test version, called Asirra, is available at :
>
> http://research.microsoft.com/asirra/
>
>
> Best regards,
>
>
> Catherine

It was definitely easier for me than most captchas ... I tried it
three times & got it right twice!
Some images were quite difficult, and, thinking about users with
cognitive difficulties, it would be hard. I suspect, however, that
depending on the images selected, for many with cognitive
disabilities, distinguishing between a cat & a dog would be much
easier than z/2, 1/I/l (see ... that was an upper case "i" and a lower
case "L" - and they look the same to me & I wrote them!), and all the
other letters/numbers that it's so easy to muddle when trying to work
out a captcha.

Emma
--
Blog: http://www.tech.port.ac.uk/staffweb/duke-wie/blog/