Société des Codes Télégraphiques was a company in Marseille (France),
established by Georges Lugagne around 1900, specialising in simple
civil encryption/decryption techniques, mainly for use in international
telegraphy. The company is particularly known for its range of
short message code books that appeared in many languages (including
esperanto) and that helped to shorten telegraphic (morse coded) messages
and, hence, reduce the price of telegrams.
The company is also known for its alphabet transposition cipher devices
that appeared around 1912 and 1930.