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HiFinger: One-Handed Text Entry Technique for Virtual Environments Based on Touches between Fingers

1
Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
2
AICFVE of Beijing Film Academy, 4 Xitucheng Rd, Haidian, Beijing 100088, China
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(14), 3063; https://doi.org/10.3390/s19143063
Received: 15 June 2019 / Revised: 2 July 2019 / Accepted: 5 July 2019 / Published: 11 July 2019
(This article belongs to the Section Intelligent Sensors)
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PDF [3176 KB, uploaded 11 July 2019]
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Abstract

We present a text entry technique called HiFinger, which is an eyes-free, one-handed wearable text entry technique for immersive virtual environments by thumb-to-fingers touch. This technique enables users to input text quickly, accurately, and comfortably with the sense of touch and a two-step input mode. It is especially suitable for mobile scenarios where users need to move (such as walking) in virtual environments. Various input signals can be triggered by moving the thumb towards ultra-thin pressure sensors placed on other fingers. After acquiring the comfort range of the touch between the thumb and other fingers, six placement modes for text entry are designed and tested, resulting in an optimal placement mode that leverages six pressure sensors for the text entry and two for the control function. A three-day study is conducted to evaluate the proposed technique, and experimental results show that novices can achieve an average text entry efficiency of 9.82 words per minute (WPM) in virtual environments based on head-mounted displays after a training period of 25 min. View Full-Text
Keywords: text entry; thumb-to-fingers; virtual reality; pressure sensor text entry; thumb-to-fingers; virtual reality; pressure sensor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Jiang, H.; Weng, D.; Zhang, Z.; Chen, F. HiFinger: One-Handed Text Entry Technique for Virtual Environments Based on Touches between Fingers. Sensors 2019, 19, 3063.

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