Spooky Technology explores our understanding of the invisible technologies in our everyday lives, from objects with ‘intelligence’ to systems in our homes that talk to us (and each other). The book is an inventory of spooky technologies, compiled by Carnegie Mellon students reviewing work across art, design, HCI, psychology, human factors research, and other fields, that has been done in this field, or adjacent to it, both historically and more recently, with commentary, essays, and interviews with creators and artists. We often hear that the technologies in our everyday lives would appear to be ‘magic’ and potentially terrifying to people in the past—instantaneous communication with people all over the world, access to a vast, ever-growing resource of human knowledge right there in the palm of our hand, objects with ‘intelligence’ that can sense and talk to us (and each other). But rarely are these ‘otherworldly’ dimensions of technologies explored in more detail. There is an often unspoken presumption that the march of progress will inevitably mean we all adopt new practices, and incorporate new products and new ways of doing things into our lives—all cities will become smart cities; all homes will become smart homes. But these systems have become omnipresent without our necessarily understanding them. They are not just black boxes, but invisible: entities in our homes and everyday lives which work through hidden flows of data, unknown agendas, imaginary clouds, mysterious sets of rules which we perhaps dismiss as ‘algorithms’ or even ‘AI’ without really understanding what that means. On some level, the superstitions and sense of wonder, and ways of relating to the unknown and the supernatural (deities, spirits, ghosts) which humanity has felt in every culture throughout history have not gone away, but started to become transferred and transmuted into new forms.