US Patent 7885645 Information system with detachable information module

An information system includes a first module and a second module that interoperate over first and second communication ports. Interoperation over the first and second communication ports provides the first module access to functions and features of the second module, and likewise provides the second module access to functions and features of the first module. The first and second modules may be further operable to communicate over first and second networks, respectively.