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Distributed audience measurement systems and methods

  • US 10,672,407 B2
  • Filed: 07/21/2016
  • Issued: 06/02/2020
  • Est. Priority Date: 10/30/2009
  • Status: Active Grant
First Claim
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1. A method to meter media, the method comprising:

  • waking a portable device from an inactive state in response to an activation signal received at the portable device from a central facility, the activation signal including a first fingerprint andafter waking the portable device from the inactive state;

    storing the first fingerprint included with the activation signal in a memory of the portable device;

    recording audio with the portable device;

    generating, with the portable device, a second fingerprint based on the recorded audio;

    comparing, with the portable device, the first fingerprint to the second fingerprint to generate a match score; and

    communicating, from the portable device to the central facility, a match determination based on the match score.

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