. "Since mobile device 10, servers 50, 70, 80 and 18 exchange digital data, which can include program code, mobile device 10, server 50, 70, 80 and 18 comprise an exemplary form of a computer controlled system. [0077] Other embodiments of the invention, including combinations, additions, variations and other modifications of the disclosed embodiments will be obvious to those skilled in the art and ar" . . . .