"Inspector Sands is a codeword used by public transport authorities in London...to alert authorities of a potential emergency without causing panic amongst travellers by explicitly mentioning the nature of the emergency." Cool! (via alice)
Shakespeare put coded messages about Catholicism into his plays that, due to the "Protestant, Whig ascendancy", have not been decoded until now.
The last surviving WWII Comanche code talker dies. "The group of Comanche Indians from the Lawton area were selected for special duty in the U.S. Army to provide the Allies with a language that the Germans could not decipher."