Best accessible captcha for disability people(visual).

Hi,

Thank you for your question. With regard to captchas and accessibility, there are several fundamental problems, which you can learn more about by reading the information here. https://blog.sinabahram.com/explaining-the-fundamental-accessibility-challenge-of-captcha/

As an alternative to a captcha, you should consider using something like a logic or math-based question that a user must answer in order to submit the form. WordPress plugins for this include:

Human Captcha: https://www.ads-software.com/plugins/humancaptcha/
Math Captcha: https://www.ads-software.com/plugins/wp-math-captcha/

These are for securing your comments form, registration form, and login form. If these or similar from the WordPress plugins repository don’t help, please feel free to reply to this post with more information so we can narrow down some choices.

Thanks,

Amanda

Hi 9m9m9,

I agree with Amanda, I just wanted to add that WCAG 2.0 Level A criteria 1.1.1 address captcha.

Here are some additional points:
Providing more than two modalities of CAPTCHAs
Providing access to a human customer service representative who can bypass CAPTCHA
Not requiring CAPTCHAs for authorized users

Hope this helps,
John

Why not just use Recaptcha?

https://www.google.com/recaptcha/intro/index.html

There are plugins that will integrate this into WP.

This is the one that I use:

https://www.ads-software.com/plugins/bwp-recaptcha/

Hi rseigel,

See the link I posted in my first reply regarding the fundamental problem with captchas in particular, which includes information on Google’s current implementation of recaptcha specifically.

math text reCAPTCHA can be help, But the user have to answer the right one.

Sina’s write up is ace (linked above by Amanda, which I re-link: https://blog.sinabahram.com/explaining-the-fundamental-accessibility-challenge-of-captcha/).

Since he posted that there have been some updates, and some further discussion. I have linked them in my own post with the most recent from December 2015: https://adrianroselli.com/2014/12/recaptcha-reboot.html

My recommendation is to not use reCAPTCHA. It still presents barriers.

Instead, maybe consider a non-CAPTCHA approach (if your requirements allow you to revisit it).

Thanks Adrian. When I posted Sina’s link I don’t think I made it clickable. Also, thanks for adding your post to the discussion.

May I ask that you consider using a sso instead of a captcha? G+ would be a good alternative as quite a few higher education units have it implemented for students to use.

Captcha’s are full of inaccessible interactions, and when they’re made accessible, bots can then interact with them. A relevant xkvd comic on the issue.

The problem right now is that Dragon, and other voice recognition software, users are seen as “bots” in some of the new captchas while the audio captchas for the visually disabled are not great alternatives.