The contracts? Pumps? Im kinda talking out my ass here but currently there’s no ability to shut down the pumps themselves as far as i understand it (in l understanding coming from being a cashier at one once. The touchscreens outside just process the customers payments. Without those they can still be run from the other system inside. The pumps are not connected to Wi-Fi.
My hypothetical assumes more and more control left to the touchscreen outside i guess, and i ran with it. If it doesn’t make much sense then just reread my first sentence ;)