A method for inhibiting restenosis associated with mechanical injury of a blood vessel. The communications network can register, re-register, or de-register an application with an application server in response to receiving the feature tag. A multiple error correction model is also provided, whereby multiple replacement transceivers may be configured to replace multiple defective transceivers. The circuit includes means for coupling the amperometric sensor into said negative feedback loop of the amplifier wherein, in a first configuration, the counter electrode is coupled to said output and the reference electrode is coupled to said negative input and, in a second configuration, the work electrode is coupled to said output and the reference electrode is coupled to said negative input.