Lets say I was using a piece of hardware like retrode to emulate a game straight off of the cartridge. Does anyone know if there is a way to tell two copies of the same game apart? or possibly is there a unique identifier on the PCB itself? I know there is a serial country code but I don't know if there is any unique identifier. asking because I'm wondering if there is a way to ensure if a rom came from a specific game pak.

any ideas?