The present invention determines the resonant frequency of a wireless sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The edge is defined by adjoining first and second surfaces. Additionally, a method is described for using the device andor system to bypass the duodenum from digestion. The device communicates a request for second user authentication data from the authentication technology and compares the first user authentication data and the second user authentication data.