Pigpen Cipher (online tool) | Boxentriq

Pigpen Cipher may be known by those familiar with forms of cryptography and secret codes, but not the mainstream public. So, it could generally be a useful language for secret communications, or just interesting to dabble in between friends/family.

“Pigpen Cipher” is a geometrical monoalphabetic substitution cipher. Rather than using letters of the alphabet, words are formed from geometric symbols. Pigpen Cipher is a convenient cipher because it doesn’t need any special equipment to code or decode. It has been used by many to hide the meaning of the notes left in diaries or other documentation. The cipher is believed to be an ancient cipher, possibly originating with the Hebrew rabbis. Evidence suggests that the Knights Templar utilized a pig-pen cipher during the Christian Crusades. Variations of this cipher were also used by both the Rosicrucian brotherhood and frequently, by the Freemasons. ( >> https://en.wikipedia.org/wiki/Pigpen_cipher )

Other names for the Pigpen Cipher include Masonic Cipher, Napoleonic Cipher, Tic-Tac-Toe Cipher, and Freemason’s Cipher.