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Applications for radio frequency identification systems

DC
  • US 6,232,870 B1
  • Filed: 08/05/1999
  • Issued: 05/15/2001
  • Est. Priority Date: 08/14/1998
  • Status: Expired due to Term
First Claim
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1. A method of using a portable RFID device with a group of items each having an RFID tag, comprising the steps of:

  • (a) inputting information to the device describing a certain item or class of items;

    (b) scanning the RFID tags associated with each item in the group of items;

    (c) receiving signals from each of the scanned RFID tags; and

    (d) comparing the received signals to the information input to the device to determine whether the certain item or class of items are present among the group of items.

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