On Fri, 17 Feb 2012, Ashley Sheridan wrote:
I would avoid making a user type in something they see in a picture, as
you've just succeeded in pissing off a bunch of blind people.
Thank you! Glad someone pointed this out so I didn't have to.
And if you use a system like Recaptcha which has an audio option, you've
still locked out deafblind users.
blocked and sometimes isn't available at all, such as with some
Or lynx. Yes I'm a blind person, but even a person who isn't may want to
use it quickly from a shell to get something done.
One popular route is to ask a question that only a human could answer. I
use this method on the contact page of my site. I just ask a question
Multiply the number of heads a person has by the number of legs on 2 dogs.
It's easy for a human, but requires context, something a bot can't do
Since the person was looking for a ready-made solution, I'd like to
recommend TextCaptcha.com. It claims to have 180,243,205 easy questions,
and even has an article on ways to avoid needing a CAPTCHA in the first
I once (and only once) struck a test like this on a New Zealand government
website. I nearly died of shock. And I was able to use it with lynx
with no problems at all.
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