Ubiquitous computing is the method of enhancing computer use by making many computers available throughout the physical environment, but making them effectively invisible to the user. Since we started this work at Xerox PARC in 1988, a number of researchers around the world have begun to work in the ubiquitous computing framework. This paper explains what is new and different about the computer science in ubiquitous computing. It starts with a brief overview of ubiquitous computing, and then elaborates through a series of examples drawn from various subdisciplines of computer science: hardware components (e.g. chips), network protocols, interaction substrates (e.g. software for screens and pens), applications, privacy, and computational methods. Ubiquitous computing offers a framework for new and exciting research across the spectrum of computer science.

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Some computer science issues in ubiquitous computing

The proliferation of computing into the physical world promises more than the ubiquitous availability of computing infrastructure; it suggest new paradigms of interaction inspired by constant access to information and computational capabilities. For the past decade, application-driven research on abiquitous computing (ubicomp) has pushed three interaction themes:natural interfaces, context-aware applications,andautomated capture and access. To chart a course for future research in ubiquitous computing, we review the accomplishments of these efforts and point to remaining research challenges. Research in ubiquitious computing implicitly requires addressing some notion of scale, whether in the number and type of devices, the physical space of distributed computing, or the number of people using a system. We posit a new area of applications research, everyday computing, focussed on scaling interaction with respect to time. Just as pushing the availiability of computing away from the traditional desktop fundamentally changes the relationship between humans and computers, providing continuous interaction moves computing from a localized tool to a constant companion. Designing for continous interaction requires addressing interruption and reumption of intreaction, representing passages of time and providing associative storage models. Inherent in all of these interaction themes are difficult issues in the social implications of ubiquitous computing and the challenges of evaluating> ubiquitious computing research. Although cumulative experience points to lessons in privacy, security, visibility, and control, there are no simple guidelines for steering research efforts. Akin to any efforts involving new technologies, evaluation strategies form a spectrum from technology feasibility efforts to long-term use studies—but a user-centric perspective is always possible and necessary

/pdf/charting-past-present-and-future-research-in-ubiquitous-2aoexf7fgc.pdf

Charting past, present, and future research in ubiquitous computing

We describe a new method for use in the process of co-designing technologies with users called technology probes. Technology probes are simple, flexible, adaptable technologies with three interdisciplinary goals: the social science goal of understanding the needs and desires of users in a real-world setting, the engineering goal of field-testing the technology, and the design goal of inspiring users and researchers to think about new technologies. We present the results of designing and deploying two technology probes, the messageProbe and the videoProbe, with diverse families in France, Sweden, and the U.S. We conclude with our plans for creating new technologies for and with families based on our experiences.

/pdf/technology-probes-inspiring-design-for-and-with-families-54upfo4jsq.pdf

Technology probes: inspiring design for and with families

Eco-feedback technology provides feedback on individual or group behaviors with a goal of reducing environmental impact. The history of eco-feedback extends back more than 40 years to the origins of environmental psychology. Despite its stated purpose, few HCI eco-feedback studies have attempted to measure behavior change. This leads to two overarching questions: (1) what can HCI learn from environmental psychology and (2) what role should HCI have in designing and evaluating eco-feedback technology? To help answer these questions, this paper conducts a comparative survey of eco-feedback technology, including 89 papers from environmental psychology and 44 papers from the HCI and UbiComp literature. We also provide an overview of predominant models of proenvironmental behaviors and a summary of key motivation techniques to promote this behavior.

/pdf/the-design-of-eco-feedback-technology-4pilvfjnyr.pdf

The design of eco-feedback technology

Ubiquitous computing began in the Electronics and Imaging Laboratory of the Xerox Palo Alto Research Center. This essay tells the inside story of its evolution from “computer walls” to “calm computing.”

The origins of ubiquitous computing research at PARC in the late 1980s

This paper describes the Liveboard, a large interactive display system. With nearly one million pixels and an accurate, multi-state, cordless pen, the Liveboard provides a basis for research on user interfaces for group meetings, presentations and remote collaboration. We describe the underlying hardware and software of the Liveboard, along with several software applications that have been developed. In describing the system, we point out the design rationale that was used to make various choices. We present the results of an informal survey of Liveboard users, and describe some of the improvements that have been made in response to user feedback. We conclude with several general observations about the use of large public interactive displays.

Liveboard: a large interactive display supporting group meetings, presentations, and remote collaboration

This paper describes Tivoli, an electronic whiteboard application designed to support informal workgroup meetings and targeted to run on the Xerox Liveboard, a large screen, pen-based interactive display. Tivoli strives to provide its users with the simplicity, facile use, and easily understood functionality of conventional whiteboards, while at the same time taking advantage of the computational power of the Liveboard to support and augment its users' informal meeting practices. The paper presents the motivations for the design of Tivoli and briefly describes the current version in operation. It then reflects on several issues encountered in designing Tivoli, including the need to reconsider the basic assumptions behind the standard desktop GUI, the use of strokes as the fundamental object in the system, the generalized wipe interface technique, and the use of meta-strokes as gestural commands.

Tivoli: an electronic whiteboard for informal workgroup meetings

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Liveboard: a large interactive display supporting group meetings, presentations, and remote collaboration

Tivoli: an electronic whiteboard for informal workgroup meetings

Tivoli: an electronic whiteboard for informal workgroup meetings