Antispam "Turing Tests" can't distinguish between the blind and software

The W3C has singled out "captchas" — the pseudo-Turing-Tests intended to keep spammers form using automated tools to create freemail accounts in bulk — as disastrous for the blind and other disabled users of the Internet, since they rely on sight and reading comprehension to work. IOW, it's not a good Turing Test if the blind fail it as often as a computer does.

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