A method and computer program product are provided for eliminating access to data within a writable storage media cartridge. The bone resection device further includes a blade positioning mechanism mounted on the device or engaging with the device at least during use thereof and arranged to cooperate with the blades during rotation thereof to alter the orientation of the cutting edge relative to the shaft such that the shape of the resected surface is determined at least in part by the blade positioning mechanism. A plurality of recessed portions formed on the carrier are filled with an encapsulant for encapsulating the chip during the molding process.