WP-Plugin: dennis2society Advanced Math Captcha
Saturday, March 1st, 2008
Description: WordPress-Plugin to prevent comment spam
In contradiction to conventional CAPTCHA systems this solution does not simply require to recognize distorted numbers or letters or maybe solve an addition or subtraction, but instead challenges the user ( or spambot ) to solve REAL mathematical equations such as derivation or a limit ( limes ) .
This is admittedly not totally barrier-free but will at least handicap the common spam bot. And people who don’t know about mathematics…
Read the rest