Everything to know about Secret Codes and encrypted messages, including Semaphore and Morse code, \'Grid code\' used in the American Civil War, Egyptian hieroglyphics and traditional number replacement and alphabet switching.
Ages: 6+..
Everything to know about Secret Codes and encrypted messages, including Semaphore and Morse code, \'Grid code\' used in the American Civil War, Egyptian hieroglyphics and traditional number replacement and alphabet switching