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 also measure the conditions of the environment surrounding the system.

Title
Communication System with Remote Activation
Application Number
13/180516
Publication Number
20120007734
Application Date
July 11, 2011
Publication Date
January 12, 2012
Inventor
Jonathan Withrington
San Francisco
CA, US
Hooman Hafezi
Redwood City
CA, US
Patricia Johnson
Palo Alto
CA, US
Mark Zdeblick
Portola Valley
CA, US
Jeffrey Berkman
Saratoga
CA, US
Assignee
Proteus Biomedical
CA, US
IPC
G08B 01/08
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