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In 2020, German companies will spend close to €850 million on Virtual and Mixed Reality hardware and solutions based on smart glasses. The lion’s share will be spent on innovative applications. This text provides some guidance in this rising market by categorizing the available smart glasses and head-mounted displays into five categories and the potential business application fields into a further eight categories. Finally, it presents a matrix of suitable devices per application field.

The idea of augmented or virtual reality in combination with head mounted display is being discussed already since at least 1968. However, for a long time, this topic was discussed mainly within the academic research area with only limited effect or uptake in the work place. Primary reason for this was the missing availability of robust and affordable hardware as well as the limited mobile graphics capabilities. This has changed recently with the availability of numerous affordable devices in combination with applications from the entertainment and gaming area. This Special Issue on Smart Glasses presents a mix of recent research papers and reports to provide an overview of ongoing research and developments in work place environments. In the remainder of this introductory paper we present an overview of the history of Smart Glasses and their applications over the last decades. We also clarify the term Augmented Reality in this historic context. Then we present a topology of current products as well as their intended application areas. Finally, we introduce the papers of this issue within this context.

The advent of Building Information Modelling (BIM) provides geometry data that can be easily used for visualisations. We present six demonstrators made from the same data using similar workflows. They cover different categories of mobile devices, ranging from head-mounted displays to smartphones and tablets with inside-out positional tracking. They showcase cross-media visualisations depending on the device capabilities, which vary from a sophisticated car-based AR-setup, over wired and wireless VR, to see-through AR on smart glasses, and video-based AR on tablets.

The Smartphone Project (TSP) is an interactive dance-performance in a professional setting that exploits the communication channels provided by smartphone-apps as a new material in the dance-theatre domain. We present an account of the experience and its staging. Based on an initial study with 36 participants from the audience, we present results and discuss lessons learned from this project that might guide similar future work.

This paper reports on AREEF, the world's first multi-player Under Water Augmented Reality (UWAR) experience. The underlying mission of this work was to bring computer games and entertainment applications from traditional settings into the water using Augmented Reality (AR) technology. We provide an application overview and present findings from our participatory design process that involved engineers and designers, as wells as end-users and water-park experts. The paper closes with a brief discussion of technical aspects that relate to Wi-Fi communication and computer vision tracking, and provides an outlook for future work.

Part 18: Mobile Gaming, Mobile Life - Interweaving the Virtual and the Real; International audience; Over the last few years we have witnessed the smartphone dominating the market, the rapid growth of mobile apps, a surge in mobile augmented reality and location-based apps, and burgeoning mobile communities. While mobile topics continue to provide rich research challenges, people and companies outside academia already use these apps regularly. This is due to the increased availability of affordable devices, applications and technologies that support the creation of mixed reality experiences. Thus a core theme of our workshop at ICEC 2012 is authoring mixed realities, designing mobile games and creating mobile experiences. We would like to assess how professional designers and developers, as well as academics and end users, are using the technology to connect the digital and the real in a mobile context.

In the gaming area, augmented reality (AR) and especially mobile augmented reality provides unique opportunities. Unlike traditional video games, mobile augmented reality games are not imprisoned in the screen-space but provide for interaction with the world that surrounds us. They incorporate real locations and objects into the game, therefore tapping into a set of pre-existing thoughts, emotions and real-life experiences of its players, which in turn provides the material for a much richer gaming world and user experience. In mobile augmented reality games the playing area becomes borderless and they can be played literally anywhere and anytime. The current advancement of modern cell phone technology is finally giving more people than ever the hardware necessary to participate and experience such games.

A 3D information space is a three-dimensional visualization that contains 2D visualizations and puts them in a semantic context. In this poster, we sketch how Mixed Reality (MR) can be exploited as a technology in order to realize better interaction in a 3D information space and, as a result, to develop new interactive visualization techniques. Here, the real space is used as a metaphor for interacting with the 3D information space.