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Methods and apparatus to detect carrying of a portable audience measurement device

  • US 8,248,234 B2
  • Filed: 09/14/2011
  • Issued: 08/21/2012
  • Est. Priority Date: 10/29/2008
  • Status: Active Grant
First Claim
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1. A portable audience measurement device, comprising:

  • a media detector carried by a housing to collect media exposure data;

    a distance comparator to compare a first distance between the housing and an object at a first time and a second distance between the housing and the object at a second time; and

    a compliance detector to validate the media exposure data based on the comparison of the distance comparator.

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