However , it proved to be as unreliable then , as it had originally been .
During the 1871 uprising in the Paris Commune , the need to send and receive secured messages prompted a revival of the idea by Marquis Rochefort , president of the barricades commission .
It proved to be as unreliable then , as it had originally been .
During the 1871 uprising in the Paris Commune , the need to send and receive secured messages prompted a revival of the idea by Marquis Rochefort , president of the barricades commission .