Paper Enigma

Yung-Hsing and my interests have, historically, converged now and again, but it would appear that her recent interest in code-breaking — I turned her onto the _Bletchley Park_ series available in Netflix — has brought us together again. For her, I link to [this page][] that has the PDF templates to create your own enigma machine using paper rotors — taped rings os paper wrapped around a cardboard tube.

[this page]:

The Network Effect

Begin with an article on [steganography]( Follow link in comments to famous case of a [musician embedding an image in the spectrogram]( of a work. Discover that there are programs which will [do this](