Romantic Cryptography, i.e. how to say "I love you" but only if the other person is going to say "me too"
now i found out that the article was published in the Journal of Craptology:
http://www.anagram.com/jcrap/Volume_7/
I loved the idea with the visual crypto transparencies.
now i found out that the article was published in the Journal of Craptology: