Patent ID: 7623823

Claim:
A system for detecting user exposure to media items, comprising: a server, for receiving a plurality of reference media items from at least one media receiver; at least one stream collection server, for receiving a representation of at least one target media item from at least one client device; a stream store, coupled to the server and to the at least one stream collection server, for storing a representation of at least a subset of the received reference media items and for storing a representation of the at least one target media item; a correlator server, coupled to the stream store, for identifying one of the reference media items as corresponding to the target media item; an output device, coupled to the correlator server, for generating output signaling user exposure to the identified reference media item; and a location tracking server for detecting a location for the client device; wherein the correlator server correlates the detected location with a location of at least one geographically identifiable sponsor of a reference media item.