by Kolapo Dairo

In this episode of One-Time Pod, we dive into the history of invisible ink. Dating back to over 2,000 years ago, invisible inks have been used for secret correspondences and espionage during wars. In this episode, we explore the types of invisible inks, how it’s used, and its role in history. Overall we learn about the practical applications of invisible ink, and its significance in secret communication.

Audio Sources:

• https://www.youtube.com/results?search_query=royalty+free+war+sounds
• https://www.youtube.com/watch?v=-8r-3Nd2ghc
• https://www.youtube.com/watch?v=m34-3jR49T4
• http://www.orangefreesounds.com/bach-badinerie/
• https://www.audioblocks.com/stock-audio/regal-cello-music-cue-92483.html

Content Sources:

• https://www.artofmanliness.com/articles/man-knowledge-the-history-of-invisible-ink/
• https://en.wikipedia.org/wiki/Steganography#History
• https://en.wikipedia.org/wiki/Morse_code#Development_and_history
• https://www.wired.com/story/steganography-hacker-lexicon/
• https://en.wikipedia.org/wiki/Cryptography
• https://en.wikipedia.org/wiki/Giambattista_della_Porta
• https://www.nature.com/articles/d41586-017-05383-0
• https://en.wikipedia.org/wiki/Pliny_the_Elder#Natural_History
• https://www.gp-digital.org/world-map-of-encryption/
• https://en.wikipedia.org/wiki/National_Treasure_(film)
• https://www.bustle.com/articles/182476-what-is-invisible-ink-in-ios-10-the-messages-bubble-effect-hides-your-texts-from-prying

Image: Still from National Treasure (2004)