This invention relates to a tamper proof print cartridge for a printing device. The probe has a probe needle and an essentially prismatic probe shaft. The first current transmitter and the second current transmitter are coupled to a first interconnection and a second interconnection, respectively. In operation, the PBBS provides modified content by inserting billing and tracking code into content returned to a requesting device. Once the mobile station receives the slot from the WCDMA base station, the mobile station is confident that the slot will conform with the characteristics that the mobile station needs in order to make the appropriate measurements.