Patent ID: 8185100

Claim:
A cellular telephone comprising: memory storing, in use, ID information associated with the cellular telephone; a microphone operable to receive an acoustic signal of a user's voice or of an audio transmission and for converting the received acoustic signal into a corresponding electrical signal; an RF processor operable to transmit voice and/or data signals to and to receive data signals from a cellular telephone network; and a data processor, coupled to said microphone and to said RF processor, and operable, in a first mode: to cause voice signals corresponding to the user's voice to be passed to said RF processor for transmission to said cellular telephone network, and operable, in a second mode: to process audio transmission signals received by said microphone to obtain audience survey data relating to the audio transmission, and operable to pass to the RF processor for transmission to a remote audience survey station, for audience survey analysis, data representing: i) the stored ID information associated with the cellular telephone; and ii) the obtained audience survey data.