Patent ID: 8493214
Filing Date: 2013-07-23
Classification: G06K,G06Q

Abstract:
1. A method implemented by a master RFID tag, the method comprising: transmitting at least one first RFID read signal to a plurality of RFID tags local to the master RFID tag; receiving a first RFID response signal from each of the plurality of RFID tags in response to the at least one first RFID read signal, each of the first RFID response signals comprising an identifier associated with an article; maintaining an article record indicating at least one expected article that is to be managed by the master RFID tag; identifying one or more extra articles by identifying a specific identifier received within the plurality of first RFID response signals that lacks a corresponding specific expected article within the article record; and transmitting a master signal comprising one or more identifiers of the extra articles.