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CAPTCHA

  • Published December 31st, 2007 in Personal

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Most of the people don’t know what CAPTCHA means. So here you go:

“Completely Automated Public Turing test to tell Computers and Humans Apart”

Thing is, those CAPTCHA images they ask you to guess are extremely complex to decipher through computation. AI and Neural Networks can do some work detecting patterns, but they need to be trained and it takes a lot of time.

Brains are definitely precious things. Use yours wisely ;-)

Have a great New Years’ Eve.


3 Responses to “CAPTCHA”

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  1. Nuno Inácio
    Published at December 31st, 2007 at 3:29 pm

    If you allow me, Coding Horror had some insights about CAPTCHA effectiveness which I found very interesting:

    http://www.codinghorror.com/blog/archives/000712.html
    http://www.codinghorror.com/blog/archives/001001.html

  2. Paulo Köch
    Published at December 31st, 2007 at 6:05 pm

    For captcha security, don’t settle for less than http://recaptcha.net/ The captcha’s it features are taken from a collection of words that the current best-of-breed OCR can’t decode AND get even more distorced.

  3. mlopes
    Published at December 31st, 2007 at 6:28 pm

    Paulo,

    I don’t think I’ll require the top-notch captcha. It’s for a small website and if it grows I’ll adjust accordingly. But thanks for the tip :-)