Patent ID: 8519827

Claim:
A method of generating an activation code (AC) of a Radio Frequency Identification (RFID) tag, the method comprising: calculating a K satisfying a condition that N is set to exceed 2 K-1 and to be equal to or less than 2 K , when classifying N number of objects through a plurality of RFID tags, wherein K is greater than or equal to 2; and classifying each object in the N number of objects by: assigning a classification and a sub-classification to the object; generating a code for the object, such that the code comprises K bits, and such that a first portion of the code corresponds to the classification of the object and a second portion of the code corresponds to the sub-classification of the object, wherein the first portion of the code comprises X bits wherein the first and second portions of the code to ether comprise Y bits, and wherein Y is less than or equal to K; and recording, using a processing device, the code for the object in an RFID tag corresponding to the object, such that the code is recorded in an AC of the RFID tag, wherein, in response to receiving a first activation mask comprising X bits, the RFID tag is configured to activate when the X bits of the first activation mask match the X bits of the first portion of the code recorded in the AC of the RFID tag, and wherein, in response to receiving a second activation mask comprising Y bits, the RFID tag is configured to activate when the Y bits of the second activation mask match the Y bits of the first and second portions of the code recorded in the AC of the RFID tag.