Oct 16
Are you human?
Tech with tags: captcha 1 Comment »
There is another post on tricking spam bots by putting in hidden fields and assuming that if the field is filled out, it was by a bot.
I also saw an image based approach used in Passpack. Instead of having to type something in, you just click on the correct block:
Of course this is a constant arms race, and this doesn’t help for blind folk. I did prefer it to normal CAPTCHA.