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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(More)
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(More)
Up to now interaction in desktop games is mostly limited to keyboard and mouse input. This paper describes a desktop game, which uses emotional facial expressions as an additional input channel for creating a virtual flower in a digital universe. The game is being developed for children between 8 and 14 years old and was evaluated in a three-day field study(More)
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(More)
Elderly people often experience difficulties using interactive TV. This paper presents the findings of a usability evaluation study in combination with eye-tracking conducted for an information oriented interactive TV application. We explored two user groups: elderly users (50 years and above) and users between 20 and 30 years of age. Our focus was on how(More)
This paper presents a design exploration of full-body interaction games played in cars. It describes how we have designed, implemented, and evaluated the core experiences of three different games, which were all aimed at making sitting properly more fun for players/children while travelling by car. By making the restricted body an integral part of gameplay,(More)
Local communities are communities that have relationships in real life due to the physical location of their households. IPTV can be a way to support these local communities (either in their establishment, in fostering relationships, or even in extending these local communities). Through a two-year research process, requirements for IPTV as support for(More)