Soyuz-590

50 postcards written by two aerospace technicians in 1968 contain encrypted and hidden messages. If you want to solve them you should listen to “The Soyuz Files” podcast.

Marie-Antoinette-bar

During the French Revolution, Queen of France Marie-Antoinette sent a number of encrypted letters to Swedish diplomat Axel von Fersen. Two French scientists took a close look at them.

Pigpen-2-bar

The pigpen cipher (also known as Freemason’s cipher) is the most popular secret writing alphabet. As reported recently, it has been used to encrypt gravestone inscriptions, treasure maps, certificates, mug inscriptions, beer labels and more. Today, I’m going to introduce ten more uses.

Pigen-use-bar

The pigpen cipher (also known as Freemason’s cipher) is the most popular secret writing alphabet in history. It has been used to encrypt gravestone inscriptions, treasure maps, certificates, testaments, mug inscriptions, beer labels and more. Today, I’m going to introduce ten especially interesting uses.