> I've seen this type of solution used before, and while it requires more work > for the user, it's often less work than trying to interpret the letters in a > CAPTCHA system. >
reCAPTCHA is a nice CAPTCHA implementation that uses (mostly) actual words for verification. And it's a nice way to help with the digitizing of books as well. http://recaptcha.net/ It also has some accessibility features built in. But, as with all CAPTCHAs, it can be circumvented in a manner as described here: http://en.wikipedia.org/wiki/Captcha#Human_solvers The math equation solution is subject to this "hack" as well. I think the only way you can absolutely verify that there's a non-nefarious human on the other end is via biometrics, and I'm guessing that that won't be a feasible option. jason ________________________________________________________________ *Come to IxDA Interaction08 | Savannah* February 8-10, 2008 in Savannah, GA, USA Register today: http://interaction08.ixda.org/ ________________________________________________________________ Welcome to the Interaction Design Association (IxDA)! To post to this list ....... [EMAIL PROTECTED] Unsubscribe ................ http://www.ixda.org/unsubscribe List Guidelines ............ http://www.ixda.org/guidelines List Help .................. http://www.ixda.org/help
