Liberty Defense Holdings, Ltd., through its subsidiary, Liberty Defense Technologies Inc., engages in the development and commercialization of security detection technologies in Canada and the United States. 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. 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.