The efficient management of our daily information in physical and digital information spaces is a well-known problem. Current research on personal information management (PIM) aims to understand and improve organisational and re-finding activities. We present a case study about organisational strategies in cross-media information spaces, consisting of physical as well as digital information. In contrast to existing work, we provide a unified view on organisational strategies and investigate how re-finding cues differ across the physical and digital space. We further introduce a new mixing organisational strategy which is used in addition to the well-known filing and piling strategies. Last but not least, based on the results of our study we discuss opportunities and pitfalls for future descriptive PIM research and outline some directions for future PIM system design.

Information fragmentation is a well-known issue in personal information management (PIM). In order to overcome this problem, various PIM solutions have focussed on linking documents via semantic relationships. More recently, task-centered information management (TIM) has been introduced as an alternative PIM paradigm. While these two paradigms have their strengths and weaknesses, we aim for a new PIM system design approach to achieve better synergies with human memory. We further envision a cross-media solution where physical information is integrated with a user's digital personal information space. We present the Object-Concept-Context (OC2) conceptual framework for contextaware personal cross-media information management combining the best of the two existing PIM paradigms and integrating the most relevant features of the human memory. Further, we outline how the OC2 framework has been implemented based on a domain-specific application of the Resource-Selector-Link (RSL) hypermedia metamodel.

In this paper we present Maze Commander, a two-player game using two different types of interaction. One player uses the Oculus Rift and the other uses the Sifteo Cubes. The game requires effective and efficient communication to win. We also conducted an evaluation. The results show a positive evaluation for the game experience and collaboration, but no significant differences in game experience between the two modes of interaction. However, preferred interaction modalities were not yet taken into consideration for selecting the participants. We also present lessons learned from this experiment, and our future work.

Context awareness plays an important role in recent smart environments and embedded interactions. In order to increase user satisfaction and acceptance, these context-aware solutions should be controllable by end users. Over the last few years we have therefore seen an emerging trend towards visual programming tools for context-aware applications based on simple "IF this THEN that" rules. However, existing solutions often do not support the simple reuse of the "this" part in order to define more sophisticated rules. Given that the desired level of control varies among individuals, we propose a unified multi-layered context modelling approach distinguishing between end users, expert users and programmers. Our Context Modelling Toolkit (CMT) consists of the necessary context modelling concepts and offers a rule-based context processing engine. We further illustrate how end users and expert users might interact with the CMT framework. Finally, we highlight some advantages of our Context Modelling Toolkit by discussing a number of use cases.