Research data gathering with a portable monitor and a stationary device

A system for gathering audience measurement data, the system comprising:

• a stationary monitoring system to gather first data concerning exposure to media from a media receiver, the stationary monitoring system to gather the first data by gathering a first code encoded in the media;
• a portable monitor to:
• gather second data concerning exposure to media output by the media receiver, the portable monitor to gather the second data by gathering a second code encoded in the media;
• and
• gather location data encoded in the media by the stationary monitoring system, the location data providing information on a physical location of the portable monitor;
• and
• a processor to receive the first data, the second data, and the location data and to produce the audience measurement data concerning exposure to the media output by the media receiver based on the first data, the second data, and the location data.

A computer readable storage disc or storage device comprising instructions that, when executed, cause a machine to at least:

• collect, via a stationary monitoring system, first data concerning exposure to media output by a media receiver, the first data including a first code encoded in the media;
• collect, via a portable monitor carried on the person of a user, second data concerning exposure to the media output by the media receiver, the second data including a second code encoded in the media;
• collect, via the portable monitor, location data encoded in the media by the stationary monitoring system, the location data providing information on a physical location of the portable monitor;
• and
• produce audience measurement data concerning exposure to the media output by the media receiver from the first data, the second data, and the location data.