RE: [PHP] Audio CAPTCHA review request

At 4:59 PM -0700 4/3/07, Daevid Vincent wrote:

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From: Daevid Vincent [mailto:daevid@daevid.com] I will point you at http://www.cepstral.com/ for a possible solution to your .mp3 usage. You could use Cepstral's "swift" tool to say the text dynamically.

Actually Ted, what I was referring to was that you could say actual "words" like "rainbow6", or even made up strings such as "A35SFX". Much like a text captcha does. As it stands, I think most audio captchas use simply digits, which means you only need to understand [0-9] in your voice-breaker-code (http://vorm.net/captchas). Mixing in letters means another 26 variants, and if you went with words (which 'swift' will 'speak'), then you're in another stratosphere all together...

D. Vin: That's an interesting idea. As I said in my last post on this subject sound files can convey different meanings than just recognizing that the word "seven" means providing 7 as a solution. However, we run into the problem of those with cognitive disabilities who may not be able to resolve the CAPTCHA solution. As I see it, this is a double edged sword. If a blog, for example, requires cognitive skills to derive benefit from, is it unreasonable to present a cognitive problem for the user to solve? Let's take an extreme example -- What if you had a blog that discussed color arrangements, would be be acceptable for the blog owner to put up a color-blind CAPTCHA? Interesting topics for discussion, but probable not for this list. Thanks everyone. Cheers, tedd -- ------- http://sperling.com http://ancientstones.com http://earthstones.com