Gellersen, Hans-WernerSzwillus, GerdZiegler, Jürgen2017-11-222017-11-2220033-519-00441-0https://dl.gi.de/handle/20.500.12116/7312Under headings such as ubiquitous, invisible and ambient computing, new approaches to human-computer interfacing are investigated that give primacy to the physical world. It is envisioned that everyday objects and architectural spaces become the interfaces to an otherwise invisible computational system. In this abstract we examine three examples that explore this vision: a wall that is also a network, hallway posters that double as output medium, and a coffee table that is also an input device.enText/Conference Paper