Method and system are disclosed for managing erratic interruptions in a transmission system where the messages to be transmitted are composed of data packets and are expressed by means of a polynomial of degree t\u22121. The semiconductor device comprises a lower IGBT 1, a lower electrode layer 5 secured on lower IGBT 1, an upper electrode layer 6 secured on lower electrode layer 5, an upper IGBT 2 secured on upper electrode layer 6, and a solder layer 7 which connects upper electrode layer 6 and upper IGBT 2. The lid is a segment of the stock. The agent also includes a processor for computing a distance between the agent and the tag, based on the determined time period and a multiple number of radio wave interrogation signals.