19. A system supporting remote control of a server-administered function, the system comprising: a server supporting the server-administered function thereby to provide a user with a service in response to the user communicating a registered identity associated with either the user or a device used by the user to compile a text message; a network controller of a text messaging system, the network controller located remotely from the server and arranged to receive multiple text messages that each contain a recipient address and a sender address; a communications network connecting the network controller to the server, the communication network supporting at least transmission of text messages: control logic configured to make an assessment about each of said received messages to identify a relevant message that refers to the registered identity, said relevant message being a text message that includes a self-addressed routing direction that includes common recipient and sender addresses, wherein presence of the self-addressed routing direction in the text message confirms the registered identity and wherein the recipient address includes a mobile number of the sender address; wherein the network controller, in response to the assessment of the control logic, is configured to communicate at least part of the relevant message to said remotely located server; and the server is configured to support access of the user to the service through a user device by invoking the server-administered function based at least in part on an instruction derived from the relevant message, wherein the instruction relates to the service supported by the server, the server is configured to derive an instruction from each relevant message, the instruction relating to the service that is desired, and the server is configured to invoked the server-administered function for said desired service based at least in part on the instruction derived from the relevant message; and wherein through the device used to compile the text message with the self-addressed routing direction, controlling execution of the desired service on the server, the text message further including a body portion containing the instruction, wherein information relating to the desired service provided by the server is returned to said device via the network controller.
19. A system supporting remote control of a server-administered function, the system comprising: a server supporting the server-administered function thereby to provide a user with a service in response to the user communicating a registered identity associated with either the user or a device used by the user to compile a text message; a network controller of a text messaging system, the network controller located remotely from the server and arranged to receive multiple text messages that each contain a recipient address and a sender address; a communications network connecting the network controller to the server, the communication network supporting at least transmission of text messages: control logic configured to make an assessment about each of said received messages to identify a relevant message that refers to the registered identity, said relevant message being a text message that includes a self-addressed routing direction that includes common recipient and sender addresses, wherein presence of the self-addressed routing direction in the text message confirms the registered identity and wherein the recipient address includes a mobile number of the sender address; wherein the network controller, in response to the assessment of the control logic, is configured to communicate at least part of the relevant message to said remotely located server; and the server is configured to support access of the user to the service through a user device by invoking the server-administered function based at least in part on an instruction derived from the relevant message, wherein the instruction relates to the service supported by the server, the server is configured to derive an instruction from each relevant message, the instruction relating to the service that is desired, and the server is configured to invoked the server-administered function for said desired service based at least in part on the instruction derived from the relevant message; and wherein through the device used to compile the text message with the self-addressed routing direction, controlling execution of the desired service on the server, the text message further including a body portion containing the instruction, wherein information relating to the desired service provided by the server is returned to said device via the network controller. 20. The system of claim 19 , wherein invoking the server-administered function is based on the nature of addressing of the text message as received at the network controller.