Techniques for delivering advertisements and similar promotional messages to mobile users using USSD technology are disclosed. In use, a plurality of suppliers are registered. Based on the motion data, a current location andor shape of a surrogate is determined and deviations between the current location andor shape and a reference location andor shape are determined. The temperature sensor provides a temperature sensor output responsive to the bulk temperature so that the wavelengths are determinable as a function of the drive currents and the bulk temperature. The quill tube includes an outer surface that includes a quill tube projection. The process includes E-beam irradiation a gate patterned on a photoresist layer, trimming the gate patterned on the photoresist layer, and etching the gate patterned on the photoresist layer to a polysilicon layer disposed below the photoresist layer.