Today the design of most healthcare technology is driven by the considerations of healthcare professionals and technology companies. This has several benefits, but we argue that there is a need for a supplementary design approach on the basis the ...

The growing amount of available information poses challenges not only in the process of information retrieval. The usability of the rendered search process and results can be increased by appropriate visualization techniques or new interaction paradigms,...

Peephole interaction occurs when a spatially aware display is moved and acts as a viewport to reveal different parts of the virtual space that cannot all fit within the display at once. We investigate pointing within this peephole metaphor, where the ...

For decades, Fitts' law (1954) has been used to model pointing time in user interfaces. As with any rapid motor act, faster pointing movements result in increased errors. But although prior work has examined accuracy as the "spread of hits," no work has ...

Much has been written on creating personas --- both what they are good for, and how to create them. A common problem with personas is that they are not based on real customer data, and if they are, the data set is not of a sample size that can be ...

A persona represents a group of target users that share common behavioral characteristics. By using a narrative, picture, and name, a persona provides HCI practitioners with a vivid and specific design target. This research develops a new methodology ...

This paper presents the design and evaluation of "Game Over!", which is the world's first universally inaccessible game (i.e., a game that can be played by no one). The game is meant to be used as an educational tool for disseminating and teaching game ...

The focus of this work is the requirements engineering process in the home care domain. The overall aim is to design and document a flexible methodology to facilitate the elicitation of complex, dynamic, multi-stakeholder requirements and needs. This ...

When camera phones are used as magic lenses in handheld augmented reality applications involving wall maps or posters, pointing can be divided into two phases: (1) an initial coarse physical pointing phase, in which the target can be directly observed ...

Supporting one-handed thumb operation of touchscreen-based mobile devices presents a challenging tradeoff between visual expressivity and ease of interaction. ThumbSpace and Shift---two new application-independent, software-based interaction techniques--...

Hierarchical menus are now ubiquitous. The performance of the menu depends on many factors: structure, layout, colors and so on. There has been extensive research on novel menus, but there has been little work on improving the performance by optimizing ...

We present a new technique called 'Tilt Menu' for better extending selection capabilities of pen-based interfaces. The Tilt Menu is implemented by using 3D orientation information of pen devices while performing selection tasks. The Tilt Menu has the ...

Designing UIs that run across multiple devices is increasingly important. To address this, we have created a prototyping tool called Damask, which targets web UIs that run on PCs and mobile phones, and prompt-and-response style voice UIs. In Damask, ...

We designed an activity-based prototyping process realized in the ActivityDesigner system that combines the theoretical framework of Activity-Centered Design with traditional iterative design. This process allows designers to leverage human activities ...

Touchpad and touchscreen interaction using multiple fingers is emerging as a valuable form of high-degree-of-freedom input. While bimanual interaction has been extensively studied, touchpad interaction using multiple fingers of the same hand is not yet ...

Liquid layout of web browser elements enables enterprise applications to adapt to larger windows on larger displays, but guidelines are needed to define layout rules for widescreen page content. The present study considers the impact of relative portlet ...

An important question for HCI is to understand how and why visual search strategy is adapted to the demands imposed by the task of searching the results of a search engine. There is emerging evidence that a key part of the answer concerns the expected ...

As emphasis is placed on developing mobile, educational, and other applications that minimize cognitive load on users, it is becoming more essential to explore interfaces based on implicit engagement techniques so users can remain focused on their ...

Understanding the complexities of users' judgements and user experience is a prerequisite for informing HCI design. Current user experience (UX) research emphasises that, beyond usability, non-instrumental aspects of system quality contribute to overall ...

Handheld computers have untapped potential to improve HIV/AIDS programs in sub-Saharan Africa, particularly in the collection of survey data. We conducted an experiment in three neighborhoods of Luanda, Angola to assess the impact of the technology on ...