Every one has used CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) or HIP (Human Interactive Proof).
Captcha is usually numbers and letters and the more obscure they are to prevent programmatic interpretation, the more difficult to read.
Microsoft Research has an interesting alternative.
Asirra (Animal Species Image Recognition for Restricting Access) is a HIP that works by asking users to identify photographs of cats and dogs.
You can get a complete description and implementation guidance at http://research.microsoft.com/asirra/.
But remember, it’s still beta !
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Good idea, but, since they’re using images of shelter animals in need of adoption (in the main a GREAT idea), I hope they don’t end up using pics of animals who have been put down, but whose records haven’t yet been updated.
WOW is the only work I can say.Thanks Joe for your always-useful posts.
Damn it!! I have been working on this as a side project!! Arggh!! ah well.
Very Kewl idea… but I need to CAPTCHA some more ASP.NET Dynamic Data Videos! <hint! hint!>
Thanks Josh – I’m workin’ on ‘em
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