Remote mail delivery notification is disclosed. One surface of the sealing lip facing a lubricant space has radial helical paths formed between members projecting from the surface. Some of the outputs are used to calibrate circuits within a device following power-on. Typically, the interposer will also have a fiber array mount arranged to receive a fiber bundle and to position the fiber bundle appropriately over the array of mirrors. The interface also performs additional reasonability and security checks typically not performed by a secondary port on cardholder track data. Particularly, methods, systems, and articles of manufacture of the present invention may help evaluate andor predict traffic volume on the Internet.