In order to fully understand how the Fuel Stop Safety Switch functions, it is essential for a general understanding of the normal function of the fuel injection system. The software resource registers with a messaging service server when the software resource is initially executed, making it available if included in a user’s list of contacts, to be added as a participant. Channels are formed in an outer surface of the internal body so that the channels constitute part of the fluid passages. The method also includes invoking the function using an interrupt, if the application is executing in the non-privileged mode, wherein the function is executed within the same task as the application.