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Tracking locations and conditions of objects based on RFID signals

  • US 9,830,484 B1
  • Filed: 06/25/2014
  • Issued: 11/28/2017
  • Est. Priority Date: 06/25/2014
  • Status: Active Grant
First Claim
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1. A tracking system comprising:

  • an RFID reader having at least one RFID antenna configured to provide an electromagnetic field;

    an object having at least a first RFID tag and a second RFID tag provided on at least one surface of the object, wherein the first RFID tag is configured to transmit a first RFID signal comprising first data regarding a first attribute of a condition of the object in the presence of the electromagnetic field, and wherein the second RFID tag is configured to transmit a second RFID signal comprising second data regarding a second attribute of the condition of the object in the presence of the electromagnetic field;

    a first non-conductive shielding label releasably applied over the first RFID tag on the at least one surface of the object, wherein the first non-conductive shielding label is configured to inhibit passage of the electromagnetic field therethrough, and wherein a first indicator of the first attribute of the condition of the object is printed on an external face of the first non-conductive shielding label; and

    a computing device in communication with at least the RFID reader,wherein the computing device is configured to at least;

    identify the object;

    determine whether at least one of the first RFID signal or the second RFID signal is received by the at least one RFID antenna;

    in response to determining that the second RFID signal is received by the at least one RFID antenna,interpret the second data received in the second RFID signal;

    determine that the condition of the object is subject to the second attribute based at least in part on the second data; and

    store an indication that the condition of the object is subject to the second attribute in at least one data store.

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