Open hardware and the need for ecologically valid measurements drive the Electroencephalography (EEG) democratization movement—EEG has been steadily transcending the boundaries of clinical research, making its way into interdisciplinary fields. In Human-Computer Interaction (HCI), EEG is used to measure cognitive workload and infer cognitive processes for building cognition-aware systems. We describe and evaluate our BCIglass prototype where EEG electrodes are embedded in the frame of a mainstream Head-Mounted Display (HMD) to create a skull-peripheral topology. We devised a lab study with 34 participants who completed seven established cognitive tasks. Then, we conducted a pilot field study with one participant to test BCIglass in everyday-life settings. Our findings demonstrate that BCIglass captures EEG activity in a manner comparable to a research-grade EEG-cap system. Our topology infers the cognitive task at hand, and the underlying cognitive process(es) by proxy, with an accuracy of ∼80% and only three electrodes at the skull periphery. Embedding EEG electrodes in lightweight HMDs represents a promising approach in the quest to achieve ubiquitous brain-computer interfacing in real-world settings.

Incentives and peer competition have so far been employed independently for increasing physical activity. In this paper, we introduce Goalkeeper, a mobile application that utilizes deposit contracts for motivating physical activity in group settings. Goalkeeper enables one to set up a physical exercise challenge with a group of peers that deposit a fixed amount of money for participating. If a peer fails to complete the challenge, Goalkeeper redistributes their deposit to those who managed to complete it (i.e., zero-sum game). We evaluated the potential of Goalkeeper in increasing physical activity with a total of 50 participants over the course of 2 months. Our findings suggest that deposit contracts induce a loss-aversion bias, that in combination with peer competition, is effective in increasing exercise motivation. Ultimately, we generate a set of design principles for exergames that utilize deposit contracts for increasing physical activity in group settings.

The Interaction Design and Children (IDC) Community has a long history of innovating methods and techniques for the design and evaluation of technologies for children. Many innovations have been reported in the academic literature but the uptake of methods by industry has been slow and the community has hitherto failed to seriously consider how best to develop, present and promote their methods beyond academia. The aim of the workshop is to weave together IDC researchers and IDC key personnel coming from the industry, with genuine interest in industry-academia collaboration, into a community interested in building a coherent, high-impact collaboration channel. The goal of the workshop is to encourage a critical discussion and debate about how IDC methods can be further adopted, modified or even extended by the IDC related industry. This workshop is expected to reinforce IDC industry-academia collaboration with an ultimate goal to increase understanding and develop a community of interest that is going to co-develop ideas and novel design approaches that can bring IDC methods closer to the industrial practice.