“…Rather than requiring immediate transfer of that data to the RFID interrogator, we assume the interrogator is a mobile unit which may not always be available when a new sample is taken. A network overlay inspired by delay tolerant network (DTN) techniques manages movement of sensor data between the sensor tag and the mobile interrogator; design of that overlay is described in detail in the companion paper found in [7]. Data is gathered by the mobile interrogator shown in Figure 3 and sent to a standalone console in iPAS for display.…”