Method, apparatus and program product for generating check data for a location within an area of a workspace include receiving an identifier for a selected location that has check data associated therewith. The amplifier as a frequency response which does not attenuate signals frequencies less than one twentieth of baud rate, creates gain peaking ion the region between one twentieth and one tenth of baud rate and maintains flat peak gain up to half of baud rate. When the interface controller receives the request signals from the control chip and the micro-processor unit, the control chip may correctly read data from the memory through the first and second SPI. The cocatalyst is most preferably employed in combination with an organometallic catalyst having at lease one pi ligand. Also described is a contraceptive kit that may be used to practice the method of the invention. Moreover, by having the suction pressure flow to the interface between the thicker portion of the wrap and the opposed base of the orbiting scroll, several benefits are obtained with regard to reliable operation of the scroll compressor.