[Cryptography] Secrets in and with fans.

[Tom Mitchell]

The De Young Museum had this little link.
"Why It’s Time to Revisit the Handheld Fan—And Its Secret Language."

Not only are fans beautiful and practical objects to carry on a warm
day, they are the means to a secret language that has been largely
forgotten with time. ...  the earliest such language was made up of
individual letters, she adds that later variations were really
“extensions of body language.” The first semiofficial gestural fan
language was written by a Spanish man known simply as Fenella."


https://www.vogue.com/article/secret-language-of-the-fan-eighteenth-century-fans-de-young-museum

Do not invite your TSA inspector friends to this exhibit or another
item will be "classified" as interesting to TLA agents.  ;-)

-- 
  T o m    M i t c h e l l