Patent ID: 8384523

Claim:
An RFID tag configured to receive an RFID Activation command structure that is transmitted from an RFID reader and processed in the RFID tag, the RFID tag comprising: an antenna; circuitry coupled to the antenna, the circuitry being configured to process the command structure; the command structure comprising: a plurality of fields, the plurality of fields comprising: a session/inventory flag identification field that specifies a session that the RFID reader will use after the RFID tag has been activated; a field that indicates whether the RFID tag is to check a hibernate mode state of a session/inventory flag as a parameter upon which to base activation of the RFID tag; a control field that specifies if tag session locking is to be in effect after activation of the RFID tag; and a value that places the RFID tag in a tag session locked mode to prevent a response to a normal mode command with a differing session code than one indicated in the Activation command structure, wherein the session/inventory flag state is controlled by an RFID reader programmable timer while in a hibernate mode, wherein an activation of the RFID tag based on the timer controlled session/inventory flag state is related to system transmit power control operations such that the RFID tag accessed at a lower reader transmit power level temporarily does not respond to reader commands transmitted at a higher power level.