How Would You Design a Captcha for the Deaf-Blind?

Posted by Cliff on Wednesday December 21, 2005 @10:18AM from the an-oversight-isn't-necessarily-discrimination dept.

kesuki asks: "Right now, the state of the art captcha only works for the visually-abled. Some people are trying to start a grass roots opposition to catcha using existing anti-discrimination laws. However, without any captcha at all, spammers would have a field day. Audio captcha would work for the blind, of course, but they still leave out the deaf-blind using brail interpreters to use their computers and navigate the web. What system of captcha can you dream up that would work for the deaf-blind?"

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Re:A math question by Scorchio · 2005-12-21 10:49 · Score: 4, Insightful

The trick is to add enough variations to make automated parsing difficult. Plus, throw a few word based questions in there...

What is 6 minus the sum of 2 and 2?
Is 2 higher than eighteen?
Which of the following is an animal? Brick, horse, factory, sky.
Type four letter Q's then the letter N.
How many P's in pineapple? ...and so on. Not so easy to write an automated parser if there's a few thousand variations to cope with.