An IC chip and an IC chip manufacturing method thereof are provided. A RAN identifies a mobile device whose transmission of reverse-link control signals best represents the reverse-link air interface condition of each other mobile device in a plurality of mobile devices. The hand-off method may also include moving the mobile user device outside a coverage area of the local area network, associating the mobile user device with a wide area network based at least in part on the identification information associated with the mobile user device, and updating a wide area network server of a location associated with the mobile user device. The controller can be configured to follow the actuation of the cruise switch only when the switch is operated in the regular mode. For example, in one embodiment, the single fiducial mark has a precise dimension and the vision tool can measure the dimension in order to calibrate the scale of the system.