A method and apparatus for securing a secure processor is described. A control unit is connected to the sensing channels and is adapted to process sensed electrical signals originating from first and second locations of the heart. The piston in a closed position closes the second vane stage so that exhaust gas flows only through the first vane stage. The tip of the ferrule includes a second lens having a second focus located at the tip of the fiber. The processor is configured to utilize the compiled vehicle data to calculate a recommended route that is based, in part, on fuel consumption. The tape dispenser is injection moulded from a polymeric plastics material.