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Paper Abstract and Keywords
Presentation 2017-12-13 10:00
BubbleFlick: Improved Japanese Kana Flick Input Interface for Smartwatch and Its 30 day Continuing Evaluation
Takaki Tojo, Tsuneo Kato, Seiichi Yamamoto (Doshisha Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) A user-friendly Japanese text-entry method for smartwatches is anticipated to enhance the appeal of smartwatches to potential users communicating in Japanese language. Nishida et al. proposed Dial&Flick interface, which allowed users to enter every kana character with a single stroke using the entire touchscreen of the small watch face, measured a mean text-entry speed of 16 character per minute, an error rate of 0.08 error per character and obtained high subjective rating through a pilot study [1]. However, the prototype did not demonstrate the potential fast text entry because of the long strokes needed to enter a character. In this paper, we improved the operability and developed BubbleFlick, which enables fast text entry with short flick operations. Because Google released a Japanese text-entry method based on flick operations on a numeric keypad for smartwatches while we developed BubbleFlick, we conducted a user study comparing BubbleFlick to Google’s latest Japanese text-entry method (KeyboardFlick hereafter). The period of the user study was set to 30 days to clarify how users learn such new text-entry methods on a small touchscreen. As a result, BubbleFlick showed a comparable text-entry speed with KeyboardFlick and half the error rate for the participants who were not using KeyboardFlick on their smartphones. The experiment revealed an important factor which is missing in the current BubbleFlick, providing us an informative hint for further improvement.
Keyword (in Japanese) (See Japanese page) 
(in English) Smartwatch / Software Keyboard / Japanese kana input / / / / /  
Reference Info. IEICE Tech. Rep.
Paper #  
Date of Issue  
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Committee HCGSYMPO  
Conference Date 2017-12-13 - 2017-12-15 
Place (in Japanese) (See Japanese page) 
Place (in English) THE KANAZAWA THEATRE 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Human communication, etc. 
Paper Information
Registration To HCGSYMPO 
Conference Code 2017-12-HCGSYMPO 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) BubbleFlick: Improved Japanese Kana Flick Input Interface for Smartwatch and Its 30 day Continuing Evaluation 
Sub Title (in English)  
Keyword(1) Smartwatch  
Keyword(2) Software Keyboard  
Keyword(3) Japanese kana input  
1st Author's Name Takaki Tojo  
1st Author's Affiliation Doshisha University graduate school (Doshisha Univ.)
2nd Author's Name Tsuneo Kato  
2nd Author's Affiliation Doshisha University graduate school (Doshisha Univ.)
3rd Author's Name Seiichi Yamamoto  
3rd Author's Affiliation Doshisha University graduate school (Doshisha Univ.)
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Date Time 2017-12-13 10:00:00 
Presentation Time 25 
Registration for HCGSYMPO 
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