A packaged microphone has a base with a top face, a lid coupled to the base and forming an interior, and a MEMS microphone secured to the top face of the base within the interior. The device die and the first plurality of RDLs are over the carrier. The PDPs supply the communication units with security tokens that the communication units use to assert that they are authorized to establish sessions and reserve resources in the communication network. These technologies bring additional functionality and levels of interaction to data in consumer and business applications. The back pressure means is adapted to simulate the resistance of a human airway. The protocols of prior clinical trial are stored in the main database in the form of a software template.