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Re: alternate captcha ideas?


From: Stephan Wehner
Date: Nov 21, 2009 11:40AM

On Sat, Nov 21, 2009 at 8:58 AM, Simius Puer < <EMAIL REMOVED> > wrote:
> Hi Carin
> All CAPTCHA solutions have problems regarding accessibility and this has
> been discussed on various threads of this forum:
> http://www.webaim.org/discussion/mail_thread.php?thread=3945
> http://www.webaim.org/discussion/mail_thread.php?thread=3061 (and probably
> more)
> and there are good solutions on the main site:
> http://webaim.org/blog/spam_free_accessible_forms/
> ...this spells out real alternatives to CAPTCHA - ones that meet both
> usability and accessibility requirements, not to mention business
> requirements of security and a low form-abandonment rate.

Not quite where "spammers [may] target forms specifically". Quote from
that page:

"Disclaimer 1: These spam prevention techniques may not work for
enterprise level application where spammers may target forms
specifically. They are intended for generic contact, comment, or
registration forms where a spammer is less likely to take the time to
try and bypass your specific spam prevention mechanisms."



> CAPTCHA does have it's place, but there are much better solutions that don't
> put any burden on the user whilst maintaining security.