1. Who defines Tangible Interaction? An Encompassing View
Data-Centered View (Computer Science, HCI)
Physical representation and manipulation of digital data
Interactive coupling with digital information
[Ullmer and Ishii 2000]
Perceptual-Motor-Centered View (Industrial Design)
Bodily interaction with physical (graspable) objects
Movement expressiveness and detail
[Djajadiningrat et. al. 200x, Buur et al 2004]
Space-Centered View (Architecture, Arts)
Combination of real space, real objects and virtual displays
Interactive systems with tangible devices as integral part of real space
[Ciolfi 2004, Bongers 2002]

2. A broad view on tangible interaction
Broad scope of systems and interfaces
Tangibility / Materiality
Physical embodiment of data
Bodily / Embodied interaction
Embedded in real space
Combines approaches/ perspectives from
Computer Science, HCI
Industrial Design
Architecture, Arts
Summary of previous slide - my view encompasses these approaches - deliberately broad view,
not excluding Interesting related systems by definition, not limiting designs apriori,
but focusing on a style of bodily interaction
Each of approaches limited scope, can learn from each other, converge - synergy

3. Tangible Interaction Tangible Manipulation Spatial Interaction
Embodied Facilitation
Expressive Representatio n
Haptic Direct Manipulation
Inhabited Space
Embodied Constraints
Representational Significance
Configurable Materials
Lightweight Interaction
Non-fragmented Visibility
Multiple Access Points
Externalization
Full Body Interaction
TANGIBLE MANIP. refers to: reliance on material representations, physically manipulated. SPATIAL INTERACTION : tangible interaction is embedded in real space & interaction by movement in space. EMBODIED FACIL: configuration of material objects and space affects and directs emerging group behavior. EXPRESSIVE REP.: use of material and digital representations, their expressiveness and legibility, their relations.
Isomorph Effects
Performative Action
Tailored Representations
Perceived Coupling