Klaus Schmeh, Chief Editor Marketing at cryptovision, is one of the world ‘s leading experts in the history of encryption technology. So, it goes without saying that Klaus will speak at the fourth edition of the Crypto-History Conference in Charlotte, NC, from 22 to 24 March 2018 for the fourth time. This year, the organizer even invited him to give two lectures. One is about unsolved cryptograms, the other one about German encryption methods in the Second World War. Since Klaus’ Lego models are extremely popular in the scene, he will certainly not do without them.