Liberty Defense Holdings, Ltd., through its subsidiary, Liberty Defense Technologies Inc., engages in the development and commercialization of an active 3D imaging technology system for the security industry primarily in Canada and the United States. It offers HEXWAVE systems that detect concealed metallic and non-metallic weapons and other prohibited items. The company also provides body and footwear scanners 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.