secret sign

“Is this repudiation? Is this congratulations? Is this a secret sign?” said Arnold.

Another group sitting close by a "Secret" sign on the wall tracks weapons and nonlethal aid moving into and around Europe from more than 40 countries.

There’s something appealing about a secret sign language being manufactured into cloth used for commerce in clothing or furnishings — an International Clandestine style.

“We need a secret sign. The Gruver Approacheth.”

Other apocalypse-oriented books that provided me with inspiration this year included Ilya Kaminsky's "Deaf Republic," about an oppressive government using police to disappear dissenters and the protestors who are murdered in the street who develop a secret sign language to communicate around unfriendly security forces.