> The enduring problem with a form protection system that interacts
> with the user is that it has to be useable by all users. The highly
> intelligent, the blissfully unaware, the blind, the deaf, the
> colorblind, the average as well as the developer.
The big reason I generally avoid them. Although there is also the
niggling issue that CAPTCHA however it's displayed, is gradually
becoming ineffective in general. There are already reports that show
robots being able to reverse-engineer the captcha with as yet limited
ability (i.e. it succeeds once in a while). I've already seen spam on
forums protected with captcha. As technology improves, captcha will
become less effective until the point at which humans actually have a
harder time figuring out the captcha than the robots do. There is no
system you can implement to get around this. It doesn't matter if it's
visual, auditory or even cognitive as in the case of a word-problem. At
some point in the not too distant future a very primitive AI will look
at the word problem and in milliseconds spit back the answer "5" - and
it will be correct more often than a human.
--
s. isaac dealey ^ new epoch
isn't it time for a change?
ph: 503.236.3691
http://onTap.riaforge.org/blog
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