KLAUS SCHMEH is one of the world's leading experts on the history of encryption. He has published thirteen books about encryption technology (mostly written in German), as well as over 200 articles, twenty-five scientific publications and 1,200 blog posts, which makes him the most published cryptology author in the world. He is a member of the editorial board of the scientific magazine, Cryptologia, and a frequent speaker at encryption conferences in Europe and the USA. He has given presentations at the NSA Cryptologic History Symposium, the Charlotte International Cryptologic Symposium, the RSA Conference in San Francisco and many more. He is known for his entertaining presentation style involving self-drawn cartoons and Lego models.