Dave Johnson on open web technologies, social software and software development
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John Udell: The CAPTCHA game: "Any scheme that relies on perceptual or cognitive talents, in order to distinguish humans from robots, will necessarily discriminate against some population of humans. If you're using such an approach, accessibility dictates that you offer several alternatives."Udell comes to the same conclusion that we did with Roller. You have to offer several alternatives. Roller 1.0 has a pluggable comment authentication mechanism so that the Roller administrator can decide how to authenticate comments. I don't think this is quite good enough. The administrator should not be the one making the choice. The person who is leaving the comment should be the one who chooses the authentication mechanism.
Dave Johnson in Roller
02:20PM Dec 01, 2004
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