US 11,816,521 B2
Dual transponder radio frequency identification
Michael K. Fein, Grayslake, IL (US)
Assigned to Zebra Technologies Corporation, Lincolnshire, IL (US)
Filed by Zebra Technologies Corporation, Lincolnshire, IL (US)
Filed on Jun. 13, 2017, as Appl. No. 15/621,508.
Application 15/621,508 is a continuation of application No. 14/681,958, filed on Apr. 8, 2015, granted, now 9,727,815.
Application 14/681,958 is a continuation of application No. 13/109,822, filed on May 17, 2011, granted, now 9,122,969, issued on Sep. 1, 2015.
Claims priority of provisional application 61/345,490, filed on May 17, 2010.
Prior Publication US 2017/0277991 A1, Sep. 28, 2017
Int. Cl. H04Q 5/22 (2006.01); G06K 19/077 (2006.01); G06K 19/07 (2006.01)
CPC G06K 19/07749 (2013.01) [G06K 19/072 (2013.01); G06K 19/07767 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for authenticating a radio frequency identification (“RFID”) tag comprising:
receiving a first signal including first data corresponding to a first transponder of the RFID tag;
determining based on the first data included in the first signal whether the first transponder is part of a multi-transponder tag;
in response to determining that the first transponder is not part of a multi-transponder tag, executing a first command;
in response to determining that the first transponder is part of a multi-transponder tag, performing the following:
determining that the first transponder and a second transponder are contained within the RFID tag;
generating an interrogation signal;
receiving a second signal including second data corresponding to the second transponder that is different than the first transponder;
determining whether the second data includes new data that is different from the first data;
determining, using circuitry, whether the second data is associated with the RFID tag based on the first data and the second data; and
executing a second command.