A remote communication device, such as a radio frequency type device, that receives
temperature indicia concerning a container and/or its contents and communicates
such temperature indicia along with an identification indicia to a reader. The
remote communication device can measure and communicate temperature indicia associated
with a container in a periodic manner. The remote communication device can also
measure and communicate temperature indicia associated with a container when such
temperature indicia exceed a certain minimum or maximum threshold temperature.
The remote communication device can also include power circuitry to store energy
when energized in the range of an interrogation reader so that the remote communication
device can be powered for temperature indicia measurements when not in the range
of an interrogation reader. The temperature associated with the container and/or
its contents may be determined by various techniques including thermal contact
between the temperature sensor and the container, measuring the discharge rate
in a discharge capacitor associated with the remote communication device, and determining
the frequency of maximum energy absorption of the remote communication device to
correlate it to temperature.