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CONSTRUCTING IMAGE CAPTCHAS UTILIZING PRIVATE INFORMATION OF THE IMAGES

  • US 20100228804A1
  • Filed: 03/04/2009
  • Published: 09/09/2010
  • Est. Priority Date: 03/04/2009
  • Status: Abandoned Application
First Claim
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1. A method, comprising:

  • accessing a plurality of candidate images, each candidate image comprising public information and private information;

    selecting one or more images from the plurality of candidate images based at least in part on each image'"'"'s public information and private information; and

    constructing a CAPTCHA comprising the one or more images, a challenge, and a correct response,wherein it is difficult for a computer to automatically determine the correct response using only the public information of each of the one or more images, andwherein the private information of each of the one or more images is accessible only to an entity responsible for constructing the CAPTCHA.

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