There are at least two spam filtering services that protect their customers while getting visual verification right from an accessibility point of view. Spam Arrest provides a clearly audible equivalent of the characters to be entered in order to pass the verification test while 0Spam.com provides an e-mail copy of the numeric code to be entered. Through personal experience, I am aware that both services have provided accessible visual verification systems for at least four years. This is clear evidence that there is absolutely no excuse for ongoing inaccessibility in the area of visual verification! If you are looking for a sure way to block spam from your inbox, I strongly recommend the use of either Spam Arrest or 0Spam over lesser companies that might block blind people from sending you e-mail.
Mike Smith provided some good coverage of Google’s current accessibility issues with Gmail and visual verification on his latest Podcast. Check out the Mike Tech Show April 30 Podcast for the accessibility coverage and visit the Mike Tech Show web site for tons of additional excellent technology related content.