Introduction to Codes and Ciphers: Plus 20 Famous Unsolved Codes, Ciphers, and Mysterious Writings NOW Available!

I’m very excited to announce my NEW book, Introduction to Codes and Ciphers: Plus 20 Famous Unsolved Codes, Ciphers, and Mysterious Writings, is NOW Available on Amazon! It is packed filled with fun! Besides providing an introduction to numerous ways secrets have been hidden in the past, and offering excellent …