data compression ca. 1880
a technique that was not lost on WW1 spies...I wonder if they thought of
it themselves or if they knew of this device?
David Breneman wrote:
> As I recall, it was a similar disk-based device.
> The telegraph message would be recorded on it at
> "human" speed and send down the wire greatly sped up.
> It was recorded at the receiving end and played
> back again at the "natural" speed for a telegrapher
> to transcribe.