Uncover the Hidden Secrets in Victorian Postcards! 🕵️‍♂️

During the Victorian era, spies utilized postcards with tiny holes to discreetly send secret messages. This clever technique played on the era's obsession with codes, facilitating **digital communication** without raising suspicion. The use of **data hiding** allowed for secure exchange of information, highlighting early forms of **cryptography** and strategies for **anti forensics**. The tiny holes, strategically placed, would align with letters on the card, spelling out a hidden message.