The point you raise is valid.

I have seen examples of CAPTCHA's now where they can be spoken. So provided the site is otherwise capable of being read using a screen-reader I would assume the visually compromised would be able to follow a link to the spoken challenge.

I had another meeting with the client this afternoon. He has been told by the payment processor that either he addds CAPTCHA to the site, or they won't handle him any more. Sad, but that's just the way it is.

jdtoronto