Posted by Stan Brown on 02/25/07 02:21

Sat, 24 Feb 2007 20:59:53 +0000 from <let@it.snow>:
> Can anyone give me a URL for a reputable CAPTCHA which I can use on my
> webpage?

No, no one can give such a URL because CAPTCHA is fundamentally
flawed. It's not just that there are better or worse implementations,
it's that the whole idea is unworkable.

As Jukka said when you started this thread:
> Google for captcha (perhaps with w3c as extra keyword) to get
> enlightened.

I'll go one further and give you a specific URL:
http://www.w3.org/TR/turingtest/

Read that, and stop sighing after flawed concepts. Just like
challenge-response, CAPTCHA is a misguided "solution" to a real
problem.

--
Stan Brown, Oak Road Systems, Tompkins County, New York, USA
http://OakRoadSystems.com/
HTML 4.01 spec: http://www.w3.org/TR/html401/
validator: http://validator.w3.org/
CSS 2.1 spec: http://www.w3.org/TR/CSS21/
validator: http://jigsaw.w3.org/css-validator/
Why We Won't Help You:
http://diveintomark.org/archives/2003/05/05/why_we_wont_help_you

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