Secret codes are like magic messages that only certain people can read. Imagine if you and your friend had a special way of writing notes so no one else could understand them, that’s how spies used secret codes to send hidden messages during wars and missions. Sometimes they would write on paper with invisible ink, or use ciphers where each letter stood for another. It was like playing a game of hide-and-seek with information.
Examples
- A spy writes a message on paper with invisible ink, then reads it under a lamp.
- A secret code changes the letter A into D, so the word 'cat' becomes 'fdw'.
- A spy hides a note inside a book to send a secret message.
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See also
- Why Do We Have Leap Years?
- How Did Ancient People Navigate the Oceans?
- How Did the Pyramids Stay Standing for Thousands of Years?
- How Did Ancient Civilizations Count Without Numbers?
- Why Did the Roman Empire Fall?
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Categories: History · spying,codes,history,encryption