#$%^&*AU2011204798C120120112.pdf#####COMMUNICATION SYSTEM WITH PARTIAL POWER SOURCE ABSTRACT The system of the present invention includes a conductive element, an electronic component, and a partial power source in the form of dissimilar materials. Upon contact with a conducting fluid, a voltage potential is created and the power source is completed, which activates the system. The electronic component controls the conductance between the dissimilar materials to produce a unique current signature. The system can be used in a variety of different applications, including as components of ingestible identifiers, such as may be found in ingestible event markers, e.g., pharma-informatics enabled pharmaceutical compositions. Fig. 5Sheet 2 of 3 34 /30 FG.3 38 35 32 36 49 40 44 6 48 42 FIG.4 30 5A 4 54--------- --- -FIG.5 A .36 52 50 ,50 FIG.5
