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Radio Record, Volume X, Issue 5, 14 August 1936, Page 48

A_ method of secret facsimile transmission for telephone lines and radio was announced recently by the famous French television pioneer--Edouard Belin. Monsieur Belin, who presented his invention to the French War: Department, guarantees that messages, even though’ they’are intercepted by wire tapping or radio reception, will be so garbled that they will be absolutely incomprehensible. It is expected that. this system will prevent the leakage of messages in case of war.