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Design and evaluation of braced touch for touchscreen input stabilisation

Cockburn, Andy and Masson, Damien and Gutwin, Carl and Palanque, Philippe and Goguey, Alix and Yung, Marcus and Gris, Christine and Trask, Catherine Design and evaluation of braced touch for touchscreen input stabilisation. (2019) International Journal of Human-Computer Studies, 122. 21-37. ISSN 1071-5819

(Document in English)

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Official URL: https://doi.org/10.1016/j.ijhcs.2018.08.005


Incorporating touchscreen interaction into cockpit flight systems offers several potential advantages to aircraft manufacturers, airlines, and pilots. However, vibration and turbulence are challenges to reliable interaction. We examine the design space for braced touch interaction, which allows users to mechanically stabilise selections by bracing multiple fingers on the touchscreen before completing selection. Our goal is to enable fast and accurate target selection during high levels of vibration, without impeding interaction performance when vibration is absent. Three variant methods of braced touch are evaluated, using doubletap, dwell, or a force threshold in combination with heuristic selection criteria to discriminate intentional selection from concurrent braced contacts. We carried out an experiment to test the performance of these methods in both abstract selection tasks and more realistic flight tasks. The study results confirm that bracing improves performance during vibration, and show that doubletap was the best of the tested methods.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Airbus (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > University of Canterbury - UC (NEW ZEALAND)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > University of Saskatchewan (CANADA)
Laboratory name:
National Science Challenge (New Zealand)
Deposited On:25 Feb 2020 13:56

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