[WSG] Form submission: CAPTCHA test and accessibility

[Nick Lo]

I was wondering if any of you had opinions/thoughts on the use of 
CAPTCHA tests (or whatever proper name is given to the little numbered 
images used to verify a form submitting user is human and not a 
spamming machine).

They are obviously a reaction to the ever increasing amounts of spam 
being imposed on, e.g. comments systems, however I wondered how much 
their uptake could end up excluding certain users, e.g. vision impaired.

Nick

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