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reCAPTCHA, Using Anti-Spam Techniques for the Power of Good

 Assets Resources 2007 10 Recaptcha
You’ve all seen CAPTCHA in one form or another when creating an email or social networking account. The basic premise is that humans can still read non-uniform text better than a computer can.

Really smart people at Carnegie Mellon figured, “Hey, our book scanning and digitizing project isn’t working so well. There are still a bunch of words that our OCR just can’t handle. Let’s have humans fill the gap.”

And so it came to be.

The implementation of this idea is really one of those “Why didn’t I think of that?” moments. In CAPTCHA, you get one word you have to decipher. In CMU’s reCAPTCHA, you get two words with only one of them being the verification word. The other word helps to bring forth the destruction of libraries. j/k

Brilliant stuff.


October 2, 2007 - Posted by | Science and Technology, Software

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