LEO MARKS

Former codemaster Leo Marks, poses at his home in West London December 4, 1998, with one of the silk squares with encoded letters embroidered on it, that he fought to introduce into his secret world during World War II. Marks is haunted by memories of the British secret agents who came to him to learn coding before they parachuted behind enemy lines, many never to return. (AP Photo/Dave Caulkin)