Dual functioning signaling device

A dual functioning signaling device, comprising:

• a signaling unit comprising:
• a backplane;
• an antenna element;
• a radio frequency radiator (“RFR”);
• a transceiver conductively coupled to the antenna element;
• a control circuit conductively coupled to the transceiver;
• wherein
• one or more of the backplane, the antenna element, and the RFR are substantially planar;
• the antenna element
• is positioned proximate to the backplane and the RFR;
• operates at an antenna frequency range;
• the backplane
• is positioned proximate to the antenna element and the RFR;
• reflects electromagnetic (“EM”) radiation generated by at least one of the antenna element and the RFR away from the signaling unit;
• the RFR reflects an EM response signal within a predetermined frequency range when exposed to an interrogating EM radiation, the EM response signal comprises predetermined identifying information;
• the control circuit is configured to generate, via the transceiver, a RF signal
• when it receives a transmit signal from an input device conductively coupled to the control circuit;
• or
• at predetermined time intervals;
• the RFR comprises:
• a conductor;
• a second control circuit;
• a second transceiver;
• the second control circuit is communicatively coupled to the second transceiver;
• the second transceiver is conductively coupled to the conductor;
• the second control circuit is configured to:
• generate, via the second transceiver, the EM response signal when the conductor is exposed to the interrogating EM radiation;
• transmit, via the second transceiver, the EM response signal using the conductor;
• at least one of the antenna element and the RFR comprise a conductive composition;
• the conductive composition comprises:
• fully exfoliated single sheets of graphene;
• a polymer;
• and
• the fully exfoliated single sheets of graphene are present in the polymer matrix as a 3D percolated network.