I’ve never really liked CAPTCHA systems. You know, those images of contorted characters that you are forced to input on many web forms. The idea is that spam bots will be blocked from submitting the form and only humans shall pass. Half the time, even I can’t make out the characters. Maybe I’m a cyborg.
A better form of captcha relies on logic rather than images; something that asks random, simple questions like “enter the sum of 2 + 3.” There is, however, a new take on image-based captcha systems. reCAPTCHA combines CAPTCHA and OCR to help digitize books (one word at a time) while protecting web forms from spam bots. Better yet, the system is being made freely available.
I’m not yet convinced it will work, but it’s an interesting idea. There’s a reCAPTCHA module available for our content management system. So I may have to try it out.
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[...] About a year ago, I wrote about reCAPTCHA and thought it was an interesting alternative to the eye-crossing patterns and letters that many [...]
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