What action should be taken if a cashless device is malfunctioning?

In the context of onboard service operations, when a cashless device is malfunctioning, the most prudent course of action is to delay the flight until the issue is resolved. This is because the malfunctioning device could significantly impact the handling of onboard transactions, which may lead to confusion among passengers, disrupt the service experience, and complicate the management of onboard inventory and resources.

Delaying the flight allows crew members to ensure that all systems are functioning correctly, which is essential for providing a smooth and efficient service. It addresses potential emergencies in service handling and avoids opening the flight to complications that could arise from inadequate transaction methods or mismanagement.

While continuing operations without the device or notifying ground staff can be part of a response to a malfunction, they do not prioritize the seamless experience and safety which is critical in aviation industry standards. Other choices, such as asking passengers for cash only, might not be feasible or acceptable, especially in an environment where cashless options are likely expected by passengers, given modern trends in payment processing. Therefore, delaying the flight to address the malfunction is the most comprehensive approach to ensure a structured resolution.