Liberty Defense Holdings, Ltd., through its subsidiaries, engages in the development and commercialization of security detection technologies in Canada, the United States, and internationally. The company operates through the HEXWAVE and Contract segments. It offers HEXWAVE, a walk-through security detection system, which screens for concealed metallic and non-metallic weapons and other threats. The company also provides body scanners and footwear screeners for aviation checkpoint security, and an open architecture platform for airport security. It serves schools, hospitals, places of worship, hotels, shopping malls, airports, government offices, sports venues, rails/subways, theaters, passengers, open-air events, and entertainment venues. The company is headquartered in Wilmington, Massachusetts.