A personal floatation device includes a housing and a plurality of bladders disposed within the housing. The reduction in pressure and relatively high temperature promote rapid vaporization of the liquid while discouraging boiling of the liquid. An audio codec decodes demodulated data based on the reference clock, and codes an audio signal based on the reference clock. The confocal Raman detection plane is located in between these two imaging planes. Preferably, substantially the entire available area of the bottom plate is taken up by the piezoelectric elements. Authentication from within a multimedia content distribution network may be achieved by verifying that a network identifier associated with the communication device is associated with an account that has granted access to the smart phone and that is associated with the controlled STB.