Wearables and the Vanishing Act of TV Ratings Nielsen's shift towards wearable devices is a response to the changing nature of television viewing habits.
The company's Portable People Meter (PPM) has been around since 2016, but its limitations are now more apparent than ever.
This method relies on a device attached to a participant's belt that records audio and video signals from nearby TVs. However, signal strength and noise interference often lead to inaccurate readings.