In-N-Out does not as I understand it develop it's own Point of Sale system, they work with a vendor. What do you think would happen if In-N-Out had a location that was consistently failing to ring up orders or lose them randomly? Would the cashier blame the POS vendor and store management stand by and do nothing while the problem persisted? Would the system be rolled out without definition and documentation of workflow, reliability testing and proper training of the cashiers? Can we not operate our hospitals at least as well as we operate a burger stand?