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Line 5: :David Kahn's classic "The Codebreakers" mentions Cyrillic-based versions of this cipher as being used in Czarist jails, so obviously it was not invented for the first time in 1965. Maybe its use among American POWs in Vietnam first happened in 1965... [[User:AnonMoos\|AnonMoos]] ([[User talk:AnonMoos\|talk]]) 20:46, 31 January 2008 (UTC) I've reworked the article to indicate the above. [[User:Wasted Time R\|Wasted Time R]] ([[User talk:Wasted Time R\|talk]]) 12:51, 8 April 2008 (UTC)

Talk:Tap code: Difference between revisions