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  • The Official CAPTCHA Site

    CAPTCHA: Telling Humans and Computers Apart Automatically A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot. For example, humans can read distorted text as the one shown below, but current computer programs can't: The term CAPTCHA (for Completely Automated Public Turing Test To Tell Computers and Hum

    nirvash
    nirvash 2006/05/29
    アカウント登録のときにでてくるイメージに文字かかれたやつ。ひみこーど。
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