This paper is aimed at studying information technology acceptance in an automotive context. Most models of technology acceptance focus on barriers of successful information technology implementation in organizations, while factors that take the contextual situation into account are neglected. We address this issue through deriving context-related determinants from an extensive literature review and a content analysis, and we further describe a technology acceptance modeling process to provide an explanation for drivers' acceptance of in-car technology. Based on our evaluation we take the determinants safety and anxiety into consideration, and propose a theoretical car technology acceptance model (CTAM) by incorporating these determinants into the Unified Theory of Acceptance and Use of Technology (UTAUT) model. Our modeling approach and proposed questionnaire support decision processes regarding in-vehicle information system implementation in the automotive industry as well as behavior prediction for research purposes.

__________________________________________________________________________________________In this article we present the findings of two ethnographic studies embedded into two broader projects on interactive television in the home environment. Based on previous research on the home context and inspired by ongoing trends around interactive television, we explored basic concepts, such as the extended home, and new interaction techniques, in particular those related to future developments of the remote control. For the two studies we also developed two variations of the cultural probes method: creative probing and playful probing. This methodological approach proved to be appropriate for gathering in-depth data on participants' opinions, attitudes, and ideas in a way favorable to the participants. Overall, our results support existing research data on user media behavior and expectations and show trends in and beyond the living room, concerned with personalization, privacy, and security as well as communication. ACM Reference Format:Bernhaupt, R., Obrist, M., Weiss, A., Beck, E., and Tschelegi, M. 2008. Trends in the living room and beyond: results from ethnographic studies using creative and playful probing.

Developing a security modeling language is a complex activity. Particularly, it becomes very challenging for Security Requirements Engineering (SRE) languages where social/organizational concepts are used to represent high-level business aspects, while security aspects are typically expressed in a technical jargon at a lower level of abstraction. In order to reduce this socio-technical mismatch and reach a high quality outcome, appropriate evaluation techniques need to be chosen and carried out throughout the development process of the modeling language. In this article, the authors present and discuss the formative user-centered evaluation approach, namely an evaluation technique that starts since the early design stages and actively involves end-users. The authors demonstrate the approach in a real case study presenting the results of the evaluation. From the gained empirical evidence, we may conclude that formative user-centered evaluation is highly recommended to investigate any security modeling language.

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