Patent ID: 7737824
Filing Date: 2010-06-15
Classification: G06K,G06Q

Abstract:
1. An RFID tag which holds data that can be read therefrom from outside over the air, said RFID tag comprising: a memory circuit for holding data; and a logic circuit for processing a control command received from outside over the air; wherein said memory circuit stores its own ID number for identifying said RFID tag itself, and stores one or more parent ID numbers for identifying at least one parent RFID tag, where said RFID tag and said at least one parent RFID tag are not the same tag; and when said RFID tag receives an ID number read command which contains first data as a parameter from outside, said logic circuit outputs the own ID number to outside over the air only when the first data matches a parent ID number of said one or more parent ID numbers stored in said RFID tag.