HEATHROW Terminal 1 is the chosen site for the trial of two new security systems designed to prevent the possibility of explosives and weapons being taken on board aircraft. The two new machines, a 3D x-ray scanner and a ”detection portal” could become the machines of the future. The x-ray machine shows a three-dimensional screen image of the passengers bag enabling staff, who have to wear special glasses, to gain a unique view of the contents. The ”detection portal” blows across the person gently dislodging trapped particles and vapours, which are then, within seconds, analysed for potentially dangerous or illegal substances. http://www.baa.com