A revolution in computer interface design is changing the way we think about computers. Rather than typing on a keyboard and watching a television monitor, Augmented Reality lets people use familiar, everyday objects in ordinary ways. The difference is that these objects also provide a link into a computer network. HCI 2020 produced many ideas, both thrilling and troubling. This report is not a conventional publication of an academic conference but seeks to convey the passion of those ideas, both for the general reader and the HCI practitioner. Forthe general reader, t his is important because knowledge of what the future might be may empower, while ignorance harm. For the HCI practitioner, its purpose is to map out the terrain and suggest ...