In 1980, William O'Neil built an electronic audio device called "The Spiricom" with which he could hold two-way conversations with spirits. O'Neil claimed the device was built according to the specifications that he psychically received from George Mueller, a scientist who had died six years earlier.
Fantasma is a publication inspired by the relationship of what is called "paranormal encounter" with a decoded frequency. In this book, the collaborators act as mediums of these encounters and use graphic works to represent their experiences.