http://blackwidows.co.uk/blog/2007/09/03/the-problem-with-captchas/ The meanderings of a black widow... Fri, 21 Nov 2008 10:08:09 +0000 http://wordpress.org/?v=2.6.3 http://blackwidows.co.uk/blog/2007/09/03/the-problem-with-captchas/#comment-47595 Richard Morton Tue, 23 Oct 2007 10:25:49 +0000 http://blackwidows.co.uk/blog/?p=142#comment-47595 As a sighted user with good but not perfect eyesight, I find many captcha's irritating becuase: 1) Some are very difficult to read, and it is sometimes easy to spot extra characters that don't really exist. 2) It isn't usually made clear whether the test is case sensitive or not. I generally assume that it is. 3) If you get it wrong, most sites will produce a completely new image to identify. Whilst this is obviously more secure, I would prefer a more pragmatic approach that gives me say three attempts to get it right before changing it. As a sighted user with good but not perfect eyesight, I find many captcha’s irritating becuase:
1) Some are very difficult to read, and it is sometimes easy to spot extra characters that don’t really exist.
2) It isn’t usually made clear whether the test is case sensitive or not. I generally assume that it is.
3) If you get it wrong, most sites will produce a completely new image to identify. Whilst this is obviously more secure, I would prefer a more pragmatic approach that gives me say three attempts to get it right before changing it.

]]> http://blackwidows.co.uk/blog/2007/09/03/the-problem-with-captchas/#comment-44599 Spider Trax » CAPTCHAs Shut Out Blind Users Thu, 04 Oct 2007 13:21:59 +0000 http://blackwidows.co.uk/blog/?p=142#comment-44599 [...] anyone still has doubts about the problems that visual CAPTCHAs can create, I suggest that they check out a video produced by the American Federation for the Blind [...] [...] anyone still has doubts about the problems that visual CAPTCHAs can create, I suggest that they check out a video produced by the American Federation for the Blind [...]

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