Several MEMS-based methods and architectures which utilize vibrating micromechanical resonators in circuits to implement filtering, mixing, frequency reference and amplifying functions are provided. The remotely positioned second cathode allows modulation of current density at the wafer surface during an entire electroplating process. This fingerprint may then be compared to known fingerprints associated with particular client applications to identify the particular client application andor to assess whether the client application is malicious. The counter value increments every time the PLU code is received.