A fuel injector for injecting fuel into a cylinder of an internal combustion engine includes an injector body and a needle valve. And, based on the access code contained within the encoded request signal, the domain system determines the validity of the access code and transmits a corresponding encoded authorization signal to user at the transceiver device. The read module is coupled to the programmable module. If a rule is found to apply, the proxy cache identifies one or more forwarding destinations from the rule and determines the availability of the destinations.