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Scalability of the Size of Patterns Drawn Using Tactile Hand Guidance

Authors:
Dhanya Nair

Keywords: wearable haptics; tactile sleeve; handwriting; letter size and shape; tactile hand guidance.

Abstract:
Haptic feedback for handwriting training has been extensively studied, but with primary focus on kinematic feedback. We provide vibrotactile feedback through a wrist worn sleeve to guide the user to recreate unknown patterns and study the impact of vibrational duration (1, 2, 3 seconds) on pattern scaling. User traces a line at 90° angles, while attempting to maintain a constant speed, in the direction of the motor activated till a different motor activation is perceived. Shape and size are two features of good letter formation. Study performed on three subjects showed the ability to utilize four vibrotactile motors to guide the hand towards correct shape formation with high accuracy (> 95%). The overall size of the letter was observed to scale linearly with the vibrational duration. Implications for utilizing the vibrational feedback for handwriting correction are discussed.

Pages: 104 to 110

Copyright: Copyright (c) IARIA, 2021

Publication date: July 18, 2021

Published in: conference

ISSN: 2308-4138

ISBN: 978-1-61208-870-9

Location: Nice, France

Dates: from July 18, 2021 to July 22, 2021