An aircraft passenger service unit, which is configured for being installed in a passenger cabin of an aircraft. The unit includes at least two near field communication interfaces, wherein each of the at least two near field communication interfaces is configured for a wireless exchange of messages with a corresponding near field communication interface of a neighboring aircraft passenger service unit. The messages include information that identifies the aircraft passenger service unit and the near field communication interface sending the respective message.

An aircraft mask monitoring system is provided, which includes a plurality of masks respectively corresponding to a plurality of seats in an aircraft. The masks are configured to deliver oxygen. Each mask includes at least one of a plurality of sensors, and each sensor is configured to detect an operational parameter of the respective mask as sensor data. The system further includes one or more processors configured to communicate with the sensors via a wired or wireless connection, receive the sensor data from the sensors, store the sensor data in an associated storage device, and process the sensor data using anomaly detection logic to generate a sensor data report. The sensor data report includes an anomaly state of at least one mask. The one or more processors are further configured to output the sensor data report for display on a client computing device.