This article focuses on the conceptual relation between the user's input and a system's output in interaction with smart tangible objects. Understanding this input-output relation (IO relation) is a ...prerequisite for the design of meaningful interaction. A meaningful IO relation allows the user to know what to do with a system to achieve a certain goal and to evaluate the outcome. The work discussed in this article followed a design research process in which four concepts were developed and prototyped. An evaluation was performed using these prototypes to investigate the effect of highly different IO relations on the user's understanding of the interaction. The evaluation revealed two types of IO relations differing in functionality and the number of mappings between the user and system actions. These two types of relations are described by two IO models that provide an overview of these mappings. Furthermore, they illustrate the role of the user and the influence of the system in the process of understanding the interaction. The analysis of the two types of IO models illustrates the value of understanding IO relations for the design of smart tangible objects.
Understanding tangible interaction's foundational concepts can lead to systems with direct, integrated, and meaningful data control and representation.
On the relative importance of privacy guidelines for ambient health care van de Garde-Perik, Evelien; Markopoulos, Panos; de Ruyter, Boris
ACM International Conference Proceeding Series; Vol. 189: Proceedings of the 4th Nordic conference on Human-computer interaction: changing roles; 14-18 Oct. 2006,
10/2006
Conference Proceeding
Odprti dostop
We present an empirical study regarding the relative importance of complying with privacy related guidelines in the context of a Health Monitoring System. Participants were confronted with text ...scenarios describing privacy related aspects of a health monitoring service for daily use at home. Participants assessed the relative importance to them of simplified variants of the OECD (Organization of Economic Cooperation and Development) guidelines for the protection of personal data. The guidelines that relate to Insight and Openness were most valued. The guidelines relating to Modification and Data Quality were valued least by most participants in this context. Methodological challenges were encountered on the way, which reveal the complexity of conducting empirical investigations of privacy aspects of human-computer interaction.
Privacy is a major concern for the design and user acceptance of pervasive technology. Investigating privacy poses several methodological challenges. A popular approach involves surveying reactions ...of people to scenarios that highlight privacy issues. This paper examines the validity of this approach. It reports an experiment that compared people’s ability to correctly judge compliance to privacy principles when scenarios are presented in video versus textual form. It was found that such privacy-related concepts are hard to understand, leading to a large number of erroneous judgments regardless of medium and that interpretation varied across media. Comprehension in such studies can be improved, if a text scenario is preceded by a video-based version.
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