I’m fascinated by ciphers. There is a great book on code breaking by Simon Singh called The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography . The book is full of different encoding methods people have used throughout the ages to hide their secret messages. This book was the inspiration for an application I had in mind to make – something that would allow you to choose an encoding method from a large range of methods, and encode a message so that another person receiving the message could decode it (with the right key).
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BuildMobile: Featured App: Secret