WebAIM - Web Accessibility In Mind

E-mail List Archives

Thread: a couple of CAPTCHA alternatives

for

Number of posts in this thread: 2 (In chronological order)

From: Terrill Thompson
Date: Thu, Sep 24 2009 11:50AM
Subject: a couple of CAPTCHA alternatives
No previous message | Next message →

Does anyone have experience with these CAPTCHA alternatives?

CFFormProtect
http://cfformprotect.riaforge.org/

NoBot
http://www.asp.net/AJAX/AjaxControlToolkit/Samples/NoBot/NoBot.aspx

I haven't played with either of these but it seems to be a promising direction. Are there other similar products out there?


Terrill Thompson
Technology Accessibility Specialist
DO-IT, Accessible Technology
UW Technology Services
University of Washington
= EMAIL ADDRESS REMOVED =

From: Simius Puer
Date: Thu, Sep 24 2009 12:10PM
Subject: Re: a couple of CAPTCHA alternatives
← Previous message | No next message

not used either but I have implemented just 2 of the items in
http://webaim.org/blog/spam_free_accessible_forms/ and cut spam to zero
whilst maintaining genuine submissions.

one thing I notice from CFFormProtect is

"-Hidden form field--Most spam bots just fill out all form fields and submit
> them. This test uses a form field that is hidden by CSS, and tests to make
> sure that field is empty. If a blind person's screen reader sees this hidden
> field, there is a field label telling them not to fill it out."
>

...true, but this does not help with auto-form-fill-assistants (discussed in
more detail on the link at the top of my mail) which are growing in
popularity.

Best regards