news sign: Vancouver-based Liberty Defense Holdings Ltd. says the technology, known as Hexwave, can detect both metallic and non-metallic weapons ranging from guns and knives to explosives, according to National Observer. Don't miss out on the latest news Sign up for our daily briefing It operates by capturing radar images, then using artificial intelligence to analyze those images for signs of a weapon concealed in bags or under clothing. The operator of Toronto's Pearson International Airport says it has agreed to test the new system developed at an Ivy League American university and marketed by a B.C. company. Liberty says the technology is not able to recognize facial features and therefore does not pose a privacy risk, a position experts in the field view with some skepticism. When I saw this opportunity, I felt that we had to be part of it. The Greater Toronto Airports Authority, which operates Pearson, says it will start deploying the technology in the spring of 2020 in a bid to boost security. ; They were trying something that could give us a more definitive look at weapons and plastic explosives that may be coming into airports, Dwayne Mac Intosh, director of corporate safety and security for the authority, said in a telephone interview. (www.immigrantscanada.com). As reported in the news.