[Mediawiki-l] code image for spam protection on forms

[FxParlant]

Hello,

My last post entitled "captcha" wasn't clear :-))

Has anybody installed one of those little crypted image with numbers, 
that people have to rewrite in a textbox before sending his/her post?

I think it becomes on some wikis, a necessity, although it remains a 
problem for visual deficient persons ... but sound captcha are a 
possible alternative even if the number of pre-recorded sounds is small

François