Unlocking Secrets: The Fascinating History of Invisible Ink & Cryptography 🕵️‍♂️

Discover how spies and royalty used invisible ink and complex ciphers like the Caesar cipher to send secret messages centuries ago. From lemon juice secrets to Mary, Queen of Scots' life-saving codes, learn how cryptography shaped history long before computers. Watch now to uncover the fascinating world of secret writing and hidden messages!