The coding machines Eva Salier worked on during the Holocaust were invented by whom?
Eva Salier:  She has written a book about her experience during her enslavement by the Nazis: "The Survival of a Spirit", a summation of the hardships suffered by her s mall group of "girls" as they were forcibly moved from secret site to secret site where they worked on electronic gear, including sending tubes for the enigma coding machine and V-2 guidance systems. Enigma machine:  Enigma was invented by the German engineer Arthur Scherbius at the end of World War I.
Arthur Scherbius