A point of sale terminal including point of sale transaction circuitry, and a socket for selectably receiving and supporting a mobile computingcommunicating device and for permitting communication between the mobile computingcommunicating device and the point of sale transaction circuitry. The received signal from which is used to infer the number of rotations of the disc and which comprises at least two of the optical elements of one type and at least one of the optical elements of the other type. Contacts are held in the contact modules and arranged in differential pairs. A composite female fastener component is positioned adjacent to and surrounding the threaded portion of the male fastener component. The invention further provides compounds of Formulas II and III, and sub-formula embodiments thereof, intermediates and processes and methods useful for the preparation of compounds of Formulas I-III.