Patent ID: 8004387
Filing Date: 2011-08-23
Classification: G06K,G06Q

Abstract:
1. A method to improve polling accuracy in a radio frequency identification (RFID) system, the method comprising: creating a current set of inventory information for a shipping container, wherein the current set of inventory information is based on data stored on RFID tags attached to a plurality of items in the shipping container, and wherein the current set is generated via an interrogation by a first tag reader of the RFID tags subsequent to the plurality of items being placed in the shipping container; storing, by the first tag reader, the current set in a container tag, wherein the container tag comprises an RFID tag inside or attached to the shipping container; creating a first baseline set of inventory information, wherein the first baseline set is based on an initial plurality of items in the shipping container, and wherein comparison of the first baseline set and the current set enables detection of removal of items from the shipping container; and receiving, by a second tag reader, data of at least some of the current set from the container tag, wherein the second tag reader is located external to the shipping container.