Methods and apparatus for multimodal audience detection and identification

An apparatus comprising:

• means for selecting a portion of a set of signal strength values associated with advertising packets from a device associated with a user, the advertising packets captured by a multi-axis receiver on a plurality of different signal polarizations;
• means for calculating a first representative signal strength value based on the selected portion of signal strength values;
• and
• means for determining a presence of the user based on whether the first representative signal strength value satisfies a threshold.

An apparatus comprising:

• a mobile device located in a media presentation area;
• a master proximity device including a signal strength monitor, the master proximity device located in the media presentation area and in communication with the mobile device;
• and
• auxiliary proximity device located in the media presentation area and in communication with the mobile device, the master proximity device and the auxiliary proximity device to detect advertising packets emitted by the mobile device to detect a presence of the user in the media presentation area.