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2019 | OriginalPaper | Chapter

A Fitts’ Law Evaluation of Hands-Free and Hands-On Input on a Laptop Computer

Authors : Mehedi Hassan, John Magee, I. Scott MacKenzie

Published in: Universal Access in Human-Computer Interaction. Multimodality and Assistive Environments

Publisher: Springer International Publishing

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Abstract

We used the Fitts’ law two-dimensional task in ISO 9241-9 to evaluate hands-free and hands-on point-select tasks on a laptop computer. For the hands-free method, we required a tool that can simulate the functionalities of a mouse to point and select without having to touch the device. We used a face tracking software called Camera Mouse in combination with dwell-time selection. This was compared with three hands-on methods, a touchpad with dwell-time selection, a touchpad with tap selection, and face tracking with tap selection. For hands-free input, throughput was 0.65 bps. The other conditions yielded higher throughputs, the highest being 2.30 bps for the touchpad with tap selection. The hands-free condition demonstrated erratic cursor control with frequent target re-entries before selection, particularly for dwell-time selection. Subjective responses were neutral or slightly favourable for hands-free input.

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previous chapter A Low Resolution Haptic Interface for Interactive Applications

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http://www.yorku.ca/mack/GoFitts.

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Title: A Fitts’ Law Evaluation of Hands-Free and Hands-On Input on a Laptop Computer
Authors: Mehedi Hassan
John Magee
I. Scott MacKenzie
Publisher: Springer International Publishing
Book: Universal Access in Human-Computer Interaction. Multimodality and Assistive Environments
Print ISBN: 978-3-030-23562-8

Electronic ISBN: 978-3-030-23563-5

Copyright Year: 2019
DOI: https://doi.org/10.1007/978-3-030-23563-5_20

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