Portable People Meter (PPM)

The Portable People Meter (PPM) is a device used by media companies to measure radio and television audiences. It detects inaudible signals embedded in broadcasts, unique to each station, when placed near the person carrying it. This allows for accurate tracking of what people listen to or watch throughout the day without requiring them to manually log their activities. The data collected helps broadcasters and advertisers understand listener/viewer habits and preferences, enabling more targeted programming and advertising. The PPM offers a non-intrusive, continuous method for audience measurement, providing industry-standard insights into media consumption patterns.