What device must a flight attendant use to perform a passenger count when flight view or ACARS is unavailable?

The use of the ePin on their eFad is integral for a flight attendant to perform a passenger count when other systems like flight view or ACARS are unavailable. The eFad (Electronic Flight Attendant Device) is designed to streamline communication and operational tasks for flight attendants. Utilizing the ePin specifically provides a secure and reliable method for tallying passengers, ensuring accuracy, and maintaining safety protocols.

Other options may involve additional steps or might not be officially sanctioned for this particular task. For instance, while a manual count sheet might seem practical, it typically requires manual data entry and might not be connected to existing systems that ensure real-time accuracy and updates. The onboard tablet and smartphone applications could potentially provide useful information but may not have the specific functionality or connectivity needed to conduct an immediate passenger count as effectively as the designated eFad. Hence, the ePin remains the most efficient and reliable choice for this purpose.