On 2 July 2010 02:55, Nolan Darilek <no...@thewordnerd.info> wrote: > There are also CAPTCHA options that don't rely on either sight or > hearing. I'm only blind, so the audio CAPTCHA would work for me, but I > can't silently sit by when my own disability is accounted for at the > expense of another. > > http://textcaptcha.com > > That's a much more inclusive CAPTCHA.
Yeah, but these rely on good understanding of English, and some of the questions seem to be getting more and more complicated. At some point the bot protection is going to be asking humans to interpret a poem or something like that :) And then spam bots will learn to do even this. My little theory is that this is why the popular CAPTCHAS rely on one or more of human senses instead of pure logic. Computers are good at logic, but it takes an awfully complicated neural network to interpret a sound or an image. Humans have a "hardware shortcut" to do that, like some highly specialised GPUs and FPGAs. Cheers _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
