Patent ID: 9607193
Date: 2017-03-28
CPC Classifications: G06K

Claim:
1. A system comprising: a reader; and a plurality of transponders; wherein the reader is configured to transmit a powering signal to the plurality of transponders, wherein each of the transponders is configured to transmit identifying data subsequent to receiving the power signal, wherein each of the transponders is configured to transmit the identifying data in response to the powering signal without a need for an instruction in the powering signal, wherein the reader is further configured to transmit a mute instruction muting all transponders except for a controlling transponder, wherein a coded instruction is included in the mute instruction, wherein the controlling transponder is configured to perform an operation in accordance with the coded instruction, and wherein the mute instruction comprises a modulation of the powering signal while the powering signal maintains a pre-selected frequency.