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No-CAPTCHA CAPTCHA

  • US 9,465,928 B2
  • Filed: 12/31/2014
  • Issued: 10/11/2016
  • Est. Priority Date: 12/31/2014
  • Status: Active Grant
First Claim
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1. A device, comprising:

  • one or more processors, implemented at least partially in hardware, to;

    receive a request from a client device;

    identify a session identifier associated with the request;

    generate, based on the request and the session identifier, a challenge associated with a Turing test,the challenge directing the client device to reveal a first group of information and obscure a second group of information;

    generate, based on the request and the session identifier, a metric associated with the challenge,the metric identifying the first group of information;

    provide, to the client device and based on the request, the challenge;

    receive a response, to the challenge, from the client device;

    determine, based on the metric, whether the response satisfies the challenge,the response not satisfying the challenge when the response is not associated with the session identifier; and

    selectively perform an action based on determining whether the response satisfies the challenge.

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