CAPTCHA

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A CAPTCHA is a computer test which attempts to discern whether a visitor to your site is an actual human being. Typically sites can be bombarded by computer programs whose sole purpose is to attempt to send email using your Timebank. A CAPTCHA can help to prevent spam on your site.

  • Completely
  • Automated
  • Public
  • Turing test to tell
  • Computers and
  • Humans
  • Apart

To read more about CAPTCHAs, visit wikipedia.