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.
See also: Code-Breaking overview | Adfgvx cipher | Adfgx cipher | Affine cipher | Atbash cipher | Beaufort cipher | Bifid cipher | Caesar cipher | Columnar transposition | Cryptogram | Double transposition | Enigma machine | Four-square cipher | Gronsfeld cipher | Keyed caesar cipher | One-time pad | Pigpen cipher | Playfair cipher | Rail fence cipher | Rot13 | Trifid cipher | Variant beaufort cipher | Vigenere cipher