A communication system and method which receive and stores an identifier; mode, an outbound message; and transmits a modified version received inbound message. The system extracts routing data comprising location and identity of each respective forwarding transceiver from received messages; compares past received messages with a current message to determine repetition, and controls the transceiver to transmit a modified version of the message having appended a geographic location and identifying information of the communication device, selectively in dependence on at least: the extracted routing data comprising location and identity of each respective forwarding transceiver, the comparing, and an operating mode.