Liberty Defense Holdings, Ltd., through its subsidiaries, develops and commercializes security detection technologies in Canada, the United States, and internationally. It operates through the HEXWAVE and Contract segments. Its HEXWAVE walk-through system screens for concealed metallic and non-metallic weapons and other threats, and it also offers body scanners and footwear screeners for aviation checkpoint security, along with an open architecture platform for airport security. Its customers include schools, hospitals, places of worship, hotels, shopping malls, airports, government offices, sports venues, rail and subway systems, theaters, open-air events, and entertainment venues. The company is headquartered in Wilmington, Massachusetts.