• Publications
  • Influence
Place Lab: Device Positioning Using Radio Beacons in the Wild
Location awareness is an important capability for mobile computing. Yet inexpensive, pervasive positioning—a requirement for wide-scale adoption of location-aware computing—has been elusive. WeExpand
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Design requirements for technologies that encourage physical activity
Overweight and obesity are a global epidemic, with over one billion overweight adults worldwide (300+ million of whom are obese). Obesity is linked to several serious health problems and medicalExpand
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Activity sensing in the wild: a field trial of ubifit garden
Recent advances in small inexpensive sensors, low-power processing, and activity modeling have enabled applications that use on-body sensing and machine learning to infer people's activitiesExpand
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MyExperience: a system for in situ tracing and capturing of user feedback on mobile phones
This paper presents MyExperience, a system for capturing both objective and subjective in situ data on mobile computing activities. MyExperience combines the following two techniques: 1) passiveExpand
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Theory-driven design strategies for technologies that support behavior change in everyday life
In this paper, we propose design strategies for persuasive technologies that help people who want to change their everyday behaviors. Our strategies use theory and prior work to substantially extendExpand
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Location disclosure to social relations: why, when, & what people want to share
Advances in location-enhanced technology are making it easier for us to be located by others. These new technologies present a difficult privacy tradeoff, as disclosing one's location to anotherExpand
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Using the Experience Sampling Method to Evaluate Ubicomp Applications
Ubiquitous computing's overarching goal is for technology to disappear into the background yet remain useful to users. A technique from the field of psychology - the experience sampling method -Expand
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UbiGreen: investigating a mobile tool for tracking and supporting green transportation habits
The greatest contributor of CO2 emissions in the average American household is personal transportation. Because transportation is inherently a mobile activity, mobile devices are well suited to senseExpand
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Exploring goal-setting, rewards, self-monitoring, and sharing to motivate physical activity
Many people have turned to technological tools to help them be physically active. To better understand how goal-setting, rewards, self-monitoring, and sharing can encourage physical activity, weExpand
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Flowers or a robot army?: encouraging awareness & activity with personal, mobile displays
Personal, mobile displays, such as those on mobile phones, are ubiquitous, yet for the most part, underutilized. We present results from a field experiment that investigated the effectiveness ofExpand
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