Evaluating Fitts’ law on vibrating touch-screen to improve visual data accessibility for blind users

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dc.contributor.author El Lahib, Manahel
dc.contributor.author Tekli, Joe
dc.contributor.author Bou Issa, Youssef
dc.date.accessioned 2019-08-09T07:12:44Z
dc.date.available 2019-08-09T07:12:44Z
dc.date.copyright 2018 en_US
dc.date.issued 2019-08-09
dc.identifier.issn 1071-5819 en_US
dc.identifier.uri http://hdl.handle.net/10725/11205
dc.description.abstract The pointing task is the process of pointing to an object on a computer monitor using a pointing device, or physically touching an object with the hand or finger. It is an important element for users when manipulating visual computer interfaces such as traditional screens and touch-screens. In this context, Fitts’ Law remains one of the central studies that have mathematically modeled the pointing method, and was found to be a good predictor of the average time needed to perform a pointing task. Yet, in our modern computerized society, accessing visual information becomes a central need for all kinds of users, namely users who are blind or visually impaired. Hence, the goal of our study is to evaluate whether Fitts’ Law can be applied for blind candidates using the vibration modality on a touch-screen. To achieve this, we first review the literature on Fitts’ Law and visual data accessibility solutions for blind users. Then, we introduce an experimental framework titled FittsEVAL studying the ability of blind users to tap specific shapes on a touch-screen, while varying different parameters, namely: target distance, target size, and the angle of attack of the pointing task. Experiments on blindfolded and blind candidates show that Fitts’ Law can be effectively applied for blind users using a vibrating touch-screen under certain parameters (i.e., when varying target distance and size), while it is not verified under others (i.e., when varying the angle of attack). This can be considered as a first step toward a more complete experimental evaluation of vibrating touch-screen accessibility, toward designing more adapted interfaces for the blind. en_US
dc.language.iso en en_US
dc.title Evaluating Fitts’ law on vibrating touch-screen to improve visual data accessibility for blind users en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 201306321 en_US
dc.author.department Electrical And Computer Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal International Journal of Human-Computer Studies en_US
dc.journal.volume 112 en_US
dc.article.pages 16-27 en_US
dc.keywords Blind users en_US
dc.keywords Pointing method en_US
dc.keywords Visual data accessibility en_US
dc.keywords Vibrating touch-screen en_US
dc.identifier.doi https://doi.org/10.1016/j.ijhcs.2018.01.005 en_US
dc.identifier.ctation El Lahib, M., Tekli, J., & Issa, Y. B. (2018). Evaluating Fitts’ law on vibrating touch-screen to improve visual data accessibility for blind users. International Journal of Human-Computer Studies, 112, 16-27. en_US
dc.author.email joe.tekli@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S1071581918300053 en_US
dc.author.affiliation Lebanese American University en_US

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