David Dearman

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Triggering shortcuts or actions on a mobile device often requires a long sequence of key presses. Because the functions of buttons are highly dependent on the current application's context, users are required to look at the display during interaction, even in many mobile situations when eyes-free interactions may be preferable. We present Virtual Shelves, a(More)
A person often has highly context-sensitive information needs that require assistance from individuals in their social network. However, a person's social network is often not broad enough to include the right people in the right situations or circumstances who can satisfy the needs. The ability to satisfy context-sensitive information needs depends on a(More)
In this paper, we present a field study comparing software-based navigation techniques (scrollbars, tap-and-drag, and touch-n-go) on mobile devices. In particular, we were interested in exploring the efficiency and user preference of these navigation techniques for different levels of mobility (sitting, walking, and standing) in a naturalistic environment.(More)
Many existing localization systems generate location predictions, but fail to report how accurate the predictions are. This paper explores the effect of revealing the error of location predictions to the end-user in a location finding field study. We report findings obtained under four different error visualization conditions and show significant benefit in(More)
Electronic recording and surveillance systems are arguably some of the most pervasive technologies in the world today. Despite this rapid proliferation and their study by many researchers, there is still work to be done in understanding how people reason about these technologies when they encounter them. In this article, the authors describe attitudes,(More)
Large information displays are common in public and semi-public spaces but still require rapid and lightweight ways for users to interact with them. We present BlueTone, a framework for developing large display applications which will interpret and react to dual-tone multi-frequency sounds transmitted from mobile phones paired with the display using the(More)
Rich text tasks are increasingly common on mobile devices, requiring the user to interleave typing and selection to produce the text and formatting she desires. However, mobile devices are a rich input space where input does not need to be limited to a keyboard and touch. In this paper, we present two complementary studies evaluating four different input(More)
The effectiveness of interaction with mobile devices can be impacted by handedness; however, support for handedness in the interface is rarely provided. The goal of this article is to demonstrate that handedness is a significant interface consideration that should not be overlooked. Four studies were conducted to explore left-handed user interaction with(More)