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Spatial Input for 2D Peephole Navigation on Mobile Devices

LOCATION:  TEL, Auditorium 3 (20th floor), Ernst-Reuter-Platz 7, 10587 Berlin

Date/Time: 07.11.2016, 14:15-15:00

SPEAKER: Martin Schüßler (TU Berlin)

ABSTRACT:

This thesis works towards establishing spatial movement as an input modality for mobile devices. The reader is introduced to related work of multi-scale navigation with state of the art multi-touch gestures and spatially aware peephole displays. Motivated by several studies that showed the potential of 2D navigation using spatial movement of a device instead of touch, three informal lab studies are presented. The first study suggests that users are able to navigate even faster with peephole displays if their physical movements are amplified by a linear gain factor. In the second study an approach that allowed users to separately translate (pan) and scale (zoom) was found to jeopardize the usefulness of spatial input. In the third study participants used a peephole display to move otherwise unreachable items closer to their thumb to tap them without using their second hand. The data gathered in the later study provided hints that peephole displays may perform equally well but not better than state of the art touch-based techniques for this type of task. Having gained insights from these studies and other works, it is argued that the potential of peephole displays lies in their multi-scale navigation performance, their complimentary nature to other inputs and their single handed operability. In order to effectively exploit this potential, the author advises to use dynamic spatial orientation mapping, a clutching mechanism and fast, accurate six degree of freedom spatial tracking. As a technical contribution the most advanced version of peephole display prototype is presented that incorporates these insights, allowing single handed navigation via touch and spatial movement, separated by a pressure based clutching mechanism. 

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