CAPTCHA

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Revision as of 19:19, 6 April 2009 (view source) Dangelsm (Talk) ← Older edit		Revision as of 19:25, 6 April 2009 (view source) Dangelsm (Talk) Newer edit →
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		+	<div style="float:right;width:315px;">
		+	[[Image:Sin_captcha.jpg|thumb|300px|A particularly poor CAPTCHA]]
		+	[[Image:Unreadable_captcha.jpg|thumb|300px|Another poor CAPTCHA]]
		+	</div>
-	[[Image:Sin_captcha.jpg|frame|A particularly poor CAPTCHA]]
	== References ==		== References ==

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Revision as of 19:25, 6 April 2009

References

1. Carnegie Mellon University. 2009. What is a CAPTCHA?.
2. Luis von Ahn, Ben Maurer, Colin McMillen, David Abraham and Manuel Blum. 2008. reCAPTCHA: Human-Based Character Recognition via Web Security Measures. In Science.
3. Luis von Ahn, Manuel Blum, Nicholas Hopper, and John Langford. CAPTCHA: Using Hard AI Problems for Security. In Eurocrypt.
4. Luis von Ahn, Manuel Blum and John Langford. 2004. Telling Humans and Computers Apart Automatically. In Communications of the ACM.
5. W3C. 2005. Inaccessibility of CAPTCHA.
6. Willis, John M. 2008. Top 10 Worst Captchas.