The way in which Media Exposure is measured (e.g., exposure, recall or recognition)
The way in which the answers of the respondents were administrated, for example self-report, other-report or registration.
The medium or media towards which exposure was measured. This can be more than one medium.
The research area in which the measurement has taken place. For instance, political, entertainment, advertising, health, sex or general. A research can belong to more than one research area.
Panelists were offered a web-enabled smart phone. The IMMI phones detect ambient room noise for each panelist on every day. The sounds were encoded, not recorded. By automatically comparing the uploaded audio fingerprints captured by the phones with audio fingerprints stored on the IMMI servers, IMMI identifies all of the media to which each respondent is exposed to.
This measure made use of Nielsen's people meter: each television set was attached to a meter and household members indicated the beginning and end of their viewing by pushing a button.
