A wavelength monitoring device for monitoring a beam of light is disclosed having a beam splitter, with opposing first and second spaced apart faces, for receiving optical radiation from the beam of light to be monitored. The OLED display has a response time of less than 10 ms, a contrast ratio of at least 1000:1, and a horizontal and vertical viewing angle of at least 160 degrees. The second diffuser is coupled to receive the compressed air from the first diffuser. The server system bills a client for services performed by the server system and provides billing information about the client to at least one of a plurality of programming transmission sources that provided the programming transmission.