Jennifer Mankoff

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We present a technique for evaluating the usability and effectiveness of ambient displays. Ambient displays are abstract and aesthetic peripheral displays portraying non-critical information on the periphery of a user's attention. Although many innovative displays have been published, little existing work has focused on their evaluation, in part because(More)
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 sense and provide feedback about these activities. In this paper, we explore the use of personal ambient displays on mobile phones to give users feedback about(More)
We present a new system, called Cirrin, for pen input of ASCII characters using word-level unistrokes. Our system addresses the tradeoff between speed and accuracy of penbased text entry by substituting precision on the part of the user for ease of recognitionon the part of the computer. Cirrin supports ease of recognition by the computer combined with(More)
In this paper, we investigate how the choice of media for capture and access affects the diary study method. The diary study is a method of understanding participant behavior and intent <i>in situ</i> that minimizes the effects of observers on participants. We first situate diary studies within a framework of field studies and review related literature. We(More)
Traditionally, computer interfaces have been confined to conventional displays and focused activities. However, as displays become embedded throughout our environment and daily lives, increasing numbers of them must operate on the periphery of our attention. &#60;i>Peripheral displays&#60;/i> can allow a person to be aware of information while she is(More)
We present the iterative design of Momento, a tool that providesintegrated support for situated evaluation of ubiquitouscomputing applications. We derived requirements for Momento from a user-centered design process that includedinterviews, observations and field studies of early versionsof the tool. Motivated by our findings, Momento supportsremote testing(More)
We conducted a questionnaire-based study of the relative importance of two factors, inquirer and situation, in determining the preferred accuracy of personal information disclosed through a ubiquitous computing system. We found that privacy preferences varied by inquirer more than by situation. That is, individuals were more likely to apply the same privacy(More)
Information about the location and size of the targets that users interact with in real world settings can enable new innovations in human performance assessment and soft-ware usability analysis. Accessibility APIs provide some information about the size and location of targets. How-ever this information is incomplete because it does not sup-port all(More)
Many context-aware services make the assumption that the context they use is completely accurate. However, in reality, both sensed and interpreted context is often ambiguous. A challenge facing the development of realistic and deployable context-aware services, therefore, is the ability to handle ambiguous context. Although some of this ambiguity may be(More)
Web access for users with disabilities is an important goal and challenging problem for web content developers and designers. This paper presents a comparison of different methods for finding accessibility problems affecting users who are blind. Our comparison focuses on techniques that might be of use to Web developers without accessibility experience, a(More)