The crossword puzzle code
Article Abstract:
A secret code can be devised by writing a message in a blank crossword grid from left to right and then copying it in code form from top to bottom. Step-by-step instructions are included.
Publication Name: Boys' Life
Subject: General interest
ISSN: 0006-8608
Year: 1992
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The Shadow code
Article Abstract:
The Shadow code is unusual because it provides several different ways to write each letter of the alphabet. Instructions for writing letters and using pointers are presented.
Publication Name: Boys' Life
Subject: General interest
ISSN: 0006-8608
Year: 1992
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The playing card code
Article Abstract:
A deck of playing cards can be used to send secret messages by assigning a letter to each card in two of the suits. Techniques for using the code are presented.
Publication Name: Boys' Life
Subject: General interest
ISSN: 0006-8608
Year: 1992
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