Creating multiple prototypes facilitates comparative reasoning, grounds team discussion, and enables situated exploration. However, current interface design tools focus on creating single artifacts. This paper introduces the Juxtapose code editor and runtime environment for designing multiple alternatives of both application logic and interface parameters. For rapidly comparing code alternatives, Juxtapose>introduces selectively parallel source editing and execution.
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TEAM MEMBERS:
Björn HartmannLoren YuAbel AllisonYeonsoo YangScott R. Klemmer
This paper explores the interactive possibilities enabled when the barrel of a digital pen is augmented with a multi-touch sensor. We present a novel multi-touch pen (MTPen) prototype and discuss its alternate uses beyond those of a standard stylus, such as allowing new touch gestures to be performed using the index finger or thumb and detecting how users grip the device as a mechanism for mode switch-ing. We also discuss the hardware and software implemen-tation challenges in realizing our prototype, and showcase how one can combine different grips (tripod, relaxed tripod, sketch, wrap) and
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TEAM MEMBERS:
Jim SpadacciniHyunyoung SongHrvoje BenkoFrancois GuimbretiereShahram IzadiXiang CaoKen Hinckley
Creating and editing large graphs and node-link diagrams are crucial activities in many application areas. For them, we consider multi-touch and pen input on interactive surfaces as very promising. This fundamental work presents a user study investigating how people edit node-link diagrams on an interactive tabletop. The study covers a set of basic operations, such as creating, moving, and deleting diagram elements. Participants were asked to perform spontaneous gestures for 14 given tasks. They could interact in three different ways: using one hand, both hands, as well as pen and hand
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TEAM MEMBERS:
Mathias FrischJens HeydekornRaimund Dachselt
In this paper we describe two projects that utilize reality-based interaction to advance collaborative scientific inquiry and discovery. We discuss the relation between reality-based and embodied interaction, and present findings from an experimental study that illustrate benefits of reality-based tabletop interaction for collaborative inquiry-based learning.
New mobile devices with large multi-touch displays, such as the iPad, have brought revolutionary changes to ways users interact with computers. Instead of traditional input devices such as keyboards, touchpads and mice, multi-touch gestures are used as the primary means of interacting with mobile devices. Surprisingly, body-motion gestures are evolving to become a new, natural, and effective way for game players to interact with game consoles in a very similar fashion: in Kinect for Xbox 360, a controller-free gaming experience is made possible by using body-motion gestures to play games.
This paper outlines research showing a suprizing agreement in the guesability of multitouch gestures on tabletop surfaces between users. It also provides more evidence that crowd sourcing gesture mapping will lead to more complete intuitive gesture set and potential convergence into a standard gesture library.
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TEAM MEMBERS:
Jacob WobbrockMeredith MorisAndrew Wilson
Direct-touch interaction on mobile phones revolves around screens that compete for visual attention with users‟ real-world tasks and activities. This paper investigates the impact of these situational impairments on touch-screen interaction. We probe several design factors for touch-screen gestures, under various levels of environmental demands on attention, in comparison to the status-quo approach of soft buttons. We find that in the presence of environmental distractions, ges-tures can offer significant performance gains and reduced attentional load, while performing as well as soft buttons
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TEAM MEMBERS:
Andrew BragdonEugene NelsonYang LiKen Hinckley
Zooming user interfaces are increasingly popular on mobile devices with touch screens. Swiping and pinching finger gestures anywhere on the screen manipulate the displayed portion of a page, and taps open objects within the page. This makes navigation easy but limits other manipulations of objects that would be supported naturally by the same gestures, notably cut and paste, multiple selection, and drag and drop. A popular device that suffers from this limitation is Apple’s iPhone. In this paper, we present Bezel Swipe, an interaction technique that supports multiple selection, cut, copy
In recent years, a large amount of software for multitouch interfaces with various degrees of similarity has been written. In order to improve interoperability, we aim to identify the common traits of these systems and present a layered software architecture which abstracts these similarities by defining common interfaces between successive layers. This provides developers with a unified view of the various types of multitouch hardware. Moreover, the layered architecture allows easy integration of existing software, as several alternative implementations for each layer can co-exist. Finally
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TEAM MEMBERS:
Florian EchtlerGudrun KlinkerJim Spadaccini
Recent advances in touch screen technology have increased the prevalence of touch screens and have prompted a wave of new touch screen-based devices. However, touch screens are still largely inaccessible to blind users, who must adopt error-prone compensatory strategies to use them or find accessible alternatives. This inaccessibility is due to interaction techniques that require the user to visually locate objects on the screen. To address this problem, we introduce Slide Rule, a set of audiobased multi-touch interaction techniques that enable blind users to access touch screen applications
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TEAM MEMBERS:
Jim SpadacciniJeffrey BighamJacob Wobbrock
Most current multi-touch capable interactive user interfaces for tabletop are built from custom toolkits that are decoupled from, and on top of, the “Desktop” provided by the underlying Operating System. However, this approach requires that each individual touch system build their own suite of touch capable custom applications (such as photo browsers), usually resulting in limited functionality. In this paper, we propose a software architecture for supporting and integrating multi-touch capability on existing desktop systems, where multi-touch and multiple single pointer input can be used
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TEAM MEMBERS:
Kelvin ChengBenjamin ItzsteinPaul SztajerMarkus Rittenbruch
It is increasingly common for software and hardware systems to support touch-based interaction. While the technology to support this interaction is still evolving, common protocols for providing consistent communication between hardware and software are available. However, this is not true for gesture recognition – the act of translating a series of strokes or touches into a system recognizable event. Developers often end up writing code for this process from scratch due to the lack of higher-level frameworks for defining new gestures. Gesture recognition can contain a significant amount of