US Patent 10186121 Shrink wrapped advertising for fire hydrants

A shrink wrap film for wrapping about a fire hydrant includes a plurality of film layers, a processor embedded between two film layers, a transceiver coupled to the processor and configured to receive and transmit wireless communication signals, an audio/visual interface element coupled to the processor and configured to be activated in response to the transceiver receiving a wireless activation signal, and wherein at least one of the plurality of film layers incorporates visual advertising content.