Comments on: Captcha usability revisited: Google inaccessible to blind people

By: Ken Moses

Ken Moses — Tue, 09 Sep 2008 19:59:43 +0000

Captchas do not work for people with impaired vision on public-access (library) computers which have the sound permanently disabled. And they are too often used to block access for new users who want to ask questions that are not covered by FAQs. It’s especially frustrating when the telephone numbers do nothing but refer to a web site. Dial-up users are also stymied by the endless load times of overly-bloated web pages. It goes on…

By: Algarve in Portugal

Algarve in Portugal — Thu, 04 Sep 2008 19:48:13 +0000

I agree with you on this, but sometimes it is hard to balance things out. If you make it too easy then someone can program something to break captchas, if you make it to hard its inaccessible to some people!

By: Cartao de Credito

Cartao de Credito — Wed, 03 Sep 2008 19:41:20 +0000

That is a good point that you bring up! I think google should make this better!

By: Voos Baratos

Voos Baratos — Sun, 31 Aug 2008 21:26:39 +0000

Its a very important point you bring up. I have never seen a blind person use a computer before and I think it is great that these issues get attention.

By: Como Emagrecer Rapido

Como Emagrecer Rapido — Thu, 28 Aug 2008 01:36:12 +0000

Man! Spammers make up some difficult problems! I think a sound captcha would be easier to “crack” than an image one.

By: 15 minutter » Blog Archive » Debat på Dagbladet information - kun for seende

Thu, 30 Aug 2007 10:18:55 +0000

[...] at bruge captcha-metoden til at stoppe en overflod af spam på sitet. Men som Jesper Rønn-Jensen tidligere har påpeget, så kan den slags desværre ikke bruges af [...]

By: justaddwater.dk | Google Release of Audio Alternative to CAPTCHA

justaddwater.dk | Google Release of Audio Alternative to CAPTCHA — Sun, 03 Dec 2006 20:47:30 +0000

[...] Interesting that they changed the meaning of the wheelchair icon. Back in January when I wrote about Google being inaccessible to blind people, the wheelchair just symbolized a popup version of the same image. Original Google CAPTCHA as described in Captcha usability revisited: Google inaccessible to blind people [...]

By: justaddwater.dk | CAPTCHA usability: Humane alternative to CAPTCHA

justaddwater.dk | CAPTCHA usability: Humane alternative to CAPTCHA — Mon, 23 Oct 2006 13:25:29 +0000

[...] So, much of this is learning from usability: Stop hurting the users! There are so many problems with traditional CAPTCHAs described already by me, Roger Johannson, Peter Krantz, Michael Mahemoff, Bob Easton, Christian Heilmann. [...]

By: Jesper Rønn-Jensen

Jesper Rønn-Jensen — Wed, 12 Jul 2006 07:15:07 +0000

Accessibilityblog has a rant "Circus of CAPTCHA's, where Matt rants Yahoo!, Digg and MySpace because they provide no alternative to the graphic captchas. There is a very interesting comment that caught my eye:

There’s absolutely no reason why CAPTCHAs have to be graphic-based, except that it’s easy. Asking the user a simple question based on the content of the site (”What is the name of this blog?”) or something that requires them to interpret a question (”What do the letters B, L, O and G spell?”) will usually do the trick. If everyone has unique questions on their own blogs, it’d make it very difficult for spammers to collect and submit the right answers automatically.

(comment by Kirsten, "Crows to burnaby)

By: justaddwater.dk | Blog usability: Avoid spam comments

justaddwater.dk | Blog usability: Avoid spam comments — Sat, 24 Jun 2006 22:07:16 +0000

[...] A non-machine readable image or similar. We probably won’t use that, because most implementations have accessibility issues to disabled users. See our ealier “Captcha usability revisited: Google inaccessible to blind people” [...]