An antique dress bought a decade ago with coded messages dating back from the 19th century was unveiled, revealing it was a U.S. Army Signal Corps weather observation, providing a glimpse into ...

William Abel, a mail censor at Iowa's State Prison, Fort Madison, using a hot iron to bring out a secret message written in lemon juice on a letter.Three Lions/Getty Images Humans have had a long ...

The National Archives' Great Escapes exhibition features records from MI9, the British agency set up in 1939 to help military personnel evade and escape capture - JONATHAN BRADY/PA WIRE A prisoner of ...

Apple has a little-known security feature, often described as a hidden 'secret code,' that can reveal if someone is snooping on your private conversations. Every iMessage chat generates a unique ...

For nearly a decade, sleuths had tried to decode a cryptic note discovered in the silk bustle dress. An analyst finally cracked the case. By Livia Albeck-Ripka Sara Rivers Cofield was on her usual ...

Tom Bowen is a senior editor who loves adventure games and RPGs. He's been playing video games for several decades now and writing about them professionally since 2020. Although he dabbles in news and ...

Whether you’re passing secret notes in class or downloading images from a space probe, Reed-Solomon codes offer an ingenious way to embed information and correct for errors. Space exploration requires ...

In steganography, an ordinary message masks the presence of a secret communication. Humans can never do it perfectly, but a new study shows it’s possible for machines. On June 27, 2010, the FBI ...

Helldivers 2 fans spotted what appears to be a spectrogram containing either Morse code or the image of a planet. The community has worked to decipher the Morse code, possibly revealing the secret ...

Though you may not have noticed this even if you did decide to watch the pre-launch livestream counting down to the release of the trailer for The Fantastic Four: First Steps earlier this week, if you ...

Any file on a computer is basically reduced to a binary code which in turn could be written as a text code. An image file is no exception to this. Since an image file has a form in a text code, you ...