As handy and useful as it is to communicate with smartphones, email, and texts, not to mention paying bills and doing banking online, all these conveniences mean that a great deal of our sensitive, personal information needs to be protected and kept secret. Readers can anticipate an intriguing overview of the ciphers, codes, algorithms, and keys used in real-life situations to keep peoples' information safe and secure. Examples of how to use some types of cryptography will challenge and intrigue.