Arbitron Inc.

Arbitron Inc. is a media and marketing research firm serving the media as well as advertisers and advertising agencies in the United States. They developed Portable People Meter (PPM) is a research technology that enables multiple media to be measured electronically, passively and simultaneously from the same survey respondent. The PPM “hears” an inaudible code that is embedded in the audio stream of audio and video programming, including television programming, radio programming, and cable network programming. The meter is equipped with a motion sensor that allows Arbitron to monitor when the meter has been carried by the respondent.

Provider of Motion Sensors in Portable People Meter (PPM).