Baconian cipher

The Baconian cipher, or Bacon's cipher, is a method for steganography invented by Francis Bacon in 1605. The writer must make use of two different typefaces for this steganography method. The message is converted to a group of five "code letters" for each letter in the message. A false message is then written, where each letter is presented by the appropriate typeface for the corresponding code letter. Instead of using two typefaces, any other method can be used that allows two distinct representations for each character.

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