A proximity sensor adapted to collect consumer location information is described. The proximity sensor includes: a detection module adapted to detect a user device within a threshold distance of the proximity sensor; a receiver adapted to collect data regarding the user device; and a communication interface adapted to allow the proximity sensor to send the collected data to a remote server. An advertising system includes: an advertising medium adapted to provide interactive advertising content to users via a multimedia output; a proximity sensor adapted to detect and communicate with user devices that pass within a threshold distance of the advertising medium; and a remote server adapted to communicate with the proximity sensor and to provide advertising content to the advertising medium. An interactive advertising device includes: a proximity sensor; and a display element adapted to display an advertising content element from among a set of advertising content elements.