Tangible computing

Draft

Definition

Tangible computing deals with tangible objects that are interfaced with computers.

Tangible Bits is the vision of the tangible media group at MIT. The group is “designing "tangible user interfaces" which employ physical objects, surfaces, and spaces as tangible embodiments of digital information. These include foreground interactions with graspable objects and augmented surfaces [...]”.

Accoding to E. Hornecker (retrieved 16:27, 12 April 2010 (UTC)), based on Ullmer and Ishii's most wide spread definition on tangible interfaces:

Generally graspable and tangible interfaces are systems relating to the use of physical artifacts as representations and controls for digital information. A central characteristic of tangible interfaces is the seamless integration of representation and control, with physical objects being both representation of information and as physical controls for directly manipulating their underlying associations. Input and Output devices fall together. There are six characteristics concerning representation and control:

1. Physical representations are computationally coupled to underlying digital information.
2. Physical representations embody mechanisms for interactive control.
3. Physical representations are perceptually coupled to actively mediated digital representations. (visual augmentation via projection, sound...)
4. Physical state of tangibles embodies key aspects of the digital state of a system. (TUIs are persistent: turn off the electrical power and there is still something meaningfull there what can be interpreted)
5. Tangible interfaces rely on a balance between physical and digital representations. Digital representations are needed to mediate dynamic information.
6. The elements of TUIs are spatially re-configurable (in contrast to tangible digital appliances)

See also: Internet of things, LEGO Mindstorms, Ubiquitous computing, Fab lab

Embodied cognition and interaction

“Embodied interaction is the creation, manipulation, and sharing of meaning through engaged interaction with artifacts” (Dourish, 2001, cited by Bekker et al. 2009).

“Embodied cognition emphasizes how the particulars of human bodies acting in physical, social, and cultural environments determine perceptual and cognitive structures, processes and operations” (Antle, 2009, cited by Bekker et al. 2009))

A framework for tangible interaction

The framework is structured around four themes […..]. Themes are:

• Tangible Manipulation refers to the material representations with distinct tactile qualities, which are typically physically manipulated in tangible interaction.
• Spatial Interaction refers to the fact that tangible interaction is embedded in real space and interaction therefore occurs by movement in space.
• Embodied Facilitation highlights how the configuration of material objects and space affects and directs emerging group behavior.
• Expressive Representation focuses on the material and digital representations employed by tangible

(Hornecker and Bluur, 2006, cited by Bekker et al. 2009)

Links

• Tangible Interfaces and Graspable Interfaces (old: Tangible Interfaces and Graspable Interfaces)

• Tangible Media Group, MIT Media Lab.

Bibliography

• Antle, A. (2009) Embodied Child Computer Interaction: Why embodiment matters, Interactions, March + April 2009, 27-30.

• Bekker, Tilde and Eggen, Berry, (2008) Designing for Children’s Physical Play, (2008), CHI 08 extended abstracts on Human factors in computing systems, Florence, Italy, 2871-2876. Abstract/PDF.

• Bekker, M.M. and Sturm, J. (2009) Stimulating Physical and Social Activity through Open-Ended Play , Interact 2009, Uppsala, Sweden, 952- 953. PDF

• Dourish, P. (2001) Where the action is: The foundations of embodied interaction. Cambridge University Press.

• Hornecker, E. and Buur, J. (2006) Getting a grip on tangible interaction: a framework on physical space and social interaction, Proceedings of the SIGCHI conference on Human Factors in computing systems table of contents, Montréal, Québec, Canada,: 437 - 446