Patent ID: 8730031

Claim:
An implantable device for communication with a communication device that communicates information using a high frequency current signature, the communication device comprising: a support structure; a first material physically associated with the support structure; and a second material physically associated with the support structure at a location different from a location of the first material, such that the first material and second material are electrically isolated from each other, wherein the support structure includes a control module for controlling the conductance between the first material and the second material to produce the high frequency current signature which contains the information, wherein the second material is dissimilar from the first material and has a different electrochemical potential such that the first and second materials provide a voltage potential difference as a result of the first and second materials being in contact with a conductive fluid to power the communication device and cause the communication device to produce the high frequency current signature which is radiated by the conductive fluid, and wherein the implantable device is configured to detect and decode the high frequency current signature as well as a low frequency current signature.