The Smithsonian’s Freer Gallery of Art and Arthur M. Sackler Gallery are sending out Bluetooth tethers to passers-by. From a Smithsonian press release:
… this new medium of advertising prompts Bluetooth phone users to opt-in to receive a free downloadable message … Bluetooth-enabled bus shelters, located in Washington, D.C.’s major pedestrian areas, will deploy a silent prompt to mobile users with Bluetooth within a 30-foot radius.