Abstract: A system and method for automating dispensing operations such as vehicle fueling operations. The system properly matches a dispenser to a port on a specific container, thereby insuring that the proper substance is loaded into the proper container. A passive or active RF/ID module is attached to the dispenser assembly. A fuel port antenna located on the container's port is used to communicated with this RF/ID module. The fuel port antenna's driving circuitry is able to step through multiple frequencies within a defined frequency band. A suitable transmission frequency is determined and stored in memory. A container-specific frequency is thereby determined and stored for future use. The use of this optimized frequency serves the dual purposes of maintaining only a short-range R/F link while also ensuring the reliability of that link.