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System and method for RFID-based printed media reading activity data acquisition and analysis

  • US 8,033,478 B2
  • Filed: 05/03/2010
  • Issued: 10/11/2011
  • Est. Priority Date: 12/15/2005
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • obtaining measurements of time variable electromagnetic characteristics in at least one marker region of conductive material in printed media, wherein a permanent change in the time-variable electromagnetic characteristics correlates to a duration of media exposure;

    wherein the at least one marker region is disposed to electromagnetically couple to a sensor element configured to detect changes of the electromagnetic characteristics of the at least one marker region associated with the media exposure; and

    determining the duration of media exposure that has occurred in the printed media based on an observed permanent change in said time-variable electromagnetic characteristics.

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