Senex

No worries. Throw some extra logs on the campfire. She will just circle it a few dozen times, get too close and burn up. Problem solved.

Old Spice

The Magicians were one of those books where I hated most of the main characters but loved the series. The TV series was great even though they deviated from the books.

There was an episode of The Magicians where Elliot and Margot used this to communicate while being spied upon. I immediately thought of this episode of Star Trek.