Steganography, not to be confused with stenography, is the art or practice of concealing a message, image, or file within another message, image, or file. Knitting has been used as a tool in steganography in several distinct ways. Arguably the best known example of steganography in knitting is written about by Dickens in A Tale of Two Cities. The character Madame Defarge is a tricoteus or knitting woman who chooses to knit while watching beheadings during the French Revolution. Defarge didn't just sit and knit she used her knitting as a form of code and created a list of the upper class doomed to die. Leave it to Dickens to take the act of knitting, generally done by kindly, mature ladies demonstrating domesticity and turn it into an act of cruelty, revenge and the macabre. Sky Fish Knitting offers up a way such a code could be achieved because Dickens didn't write about it: One possible way to encrypt names is by using a unique set of three stitches for each l
Getting it together one stitch at a time.