An identifier is received from each participant mobile device of a plurality of participant mobile devices within a participation region of a wireless network via a wireless access point. One or more attributes for each participant mobile device are retrieved based upon the identifier received from that participant mobile device. The one or more attributes indicate one or more media content items stored at that participant mobile device or previously accessed via that participant mobile device. An indication of the one or more attributes for each participant mobile device is output. Media content is selected based on the one or more attributes indicated for each participant mobile device. The media content is presented, for example, within the participation region.