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To identify technological opportunities to better support nutrition security and equality among those living in low-socioeconomic situations, we conducted 33 semi-structured interviews and seven in-home visits of lower- to middle-income households from a mid-sized city in northern Indiana. Inspired by assets-based approaches to public health, we investigated technology's role in supporting how participants selected and purchased food, planned meals, and worked through logistical barriers to obtain food. Technology helped participants identify sales and coupons, search for recipes and health-related insights to address diet and health concerns, and share information. We contribute design implications (e.g., amplifying optimization behaviors and social engagement, leveraging substitutions) in support of food agency. We further contribute three emergent archetypes to convey central shopping tendencies (i.e., inventory shoppers, menu planners, and adaptive shoppers) and identify corresponding design implications. We situate our results into nutrition decision-making and education, social psychology, food consumer studies, and HCI literature.
Agriculture is foundational for food security on our planet. Considering climate change and other pressures on food production, HCI scholars have increasingly begun to examine how the field should approach agricultural innovation. We conducted a literature review of HCI research through the lens of competing future visions for good food systems: a “conventional” vision of profit-oriented production, and an “alternative” which prioritizes sustainability and community-led practices. Leveraging the concept of sociotechnical imaginaries, we provide an empirical analysis of how HCI and adjacent applied computing projects align with these competing visions for agriculture. This review reveals, amongst other findings, a prioritization of the perspectives of the Global North and a need for more careful attention to the constraints and aspirations of subsistence farmers. Finally, we note the limits of the conventional-alternative binary that shapes much of contemporary HCI research focused on agriculture and offer opportunities for transcending this framing.
The scope of Sustainable HCI research is expanding to include the broad sociotechnical and ecological contexts of computing. We examine the intersection of environmental sustainability, technology, and the law. By studying the legal dispute between a platform service that facilitates crowd-sourced waste disposal and the local government’s regulation of waste management, we step through an evolving debate on the meaning of care and responsibility for the environment. When faced with the municipality's claimed monopoly on responsibility for waste management, the platform argues for the paradigms of individual responsibility, designing for user needs, and personalised and on-demand digital services. In arguing against this framing, the municipality highlights the gap between the law, its interpretation, and the idealistic values of technology-driven environmental care. We contribute to the framing of environmental care within Sustainable HCI as a locally constructed, regulated, and contested aspect of technology design and appropriation.
We present AeroRigUI, an actuated tangible UI for 3D spatial embodied interaction. Using strings controlled by self-propelled swarm robots with a reeling mechanism on ceiling surfaces, our approach enables \textit{rigging} (control through strings) physical objects' position and orientation in the air. This can be applied to novel interactions in 3D space, including dynamic physical affordances, 3D information displays, and haptics. Utilizing the ceiling, an often underused room area, AeroRigUI can be applied for a range of applications such as room organization, data physicalization, and animated expressions. We demonstrate the applications based on our proof-of-concept prototype, which includes the hardware design of the rigging robots, named RigBots, and the software design for mid-air object control via interactive string manipulation. \change{We also introduce technical evaluation and analysis of our approach prototype to address the hardware feasibility and safety.} Overall, AeroRigUI enables a novel spatial and tangible UI system with great controllability and deployability.
From ride-hailing to car rentals, consumers are often presented with eco-friendly options. Beyond highlighting a "green" vehicle and CO2 emissions, CO2 equivalencies have been designed to provide understandable amounts; we ask which equivalencies will lead to eco-friendly decisions. We conducted five ride-hailing scenario surveys where participants picked between regular and eco-friendly options, testing equivalencies, social features, and valence-based interventions. Further, we tested a car-rental embodiment to gauge how an individual (needing a car for several days) might behave versus the immediate ride-hailing context. We find that participants are more likely to choose green rides when presented with additional information about emissions; CO2 by weight was found to be the most effective. Further, we found that information framing - be it individual or collective footprint, positive or negative valence - had an impact on participants’ choices. Finally, we discuss how our findings inform the design of effective interventions for reducing car-based carbon-emissions.