Mark D. Dunlop
Marc Roper
ABSTRACT
Design of text entry on small screen devices, e.g. smartwatches, faces two related challenges: trading off a reasonably sized keyboard area against space to display the entered text and the concern over "fat fingers". This paper investigates tap accuracy and revisits layered interfaces to explore a novel layered text entry method. A two part user study identifies preferred typing and reading tilt angles and then investigates variants of a tilting layered keyboard against a standard layout. We show good typing speed (29 wpm) and very high accuracy on the standard layout - contradicting fears of fat-fingers limiting watch text-entry. User feedback is positive towards tilting interaction and we identify ∼14° tilt as a comfortable typing angle. However, layering resulted in slightly slower and more erroneous entry. The paper contributes new data on tilt angles and key offsets for smartwatch text entry and supporting evidence for the suitability of QWERTY on smartwatches.
- Shiri Azenkot and Shumin Zhai. 2012. Touch behavior with different postures on soft smartphone keyboards. In Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services, 251--260. Google Scholar
Digital Library
- JM Barrie. 1991. Peter Pan, or, The Boy Who Wouldn't Grow Up (Originally 1911). Millennium Fulcrum Edition.Google Scholar
- Patrick Baudisch and Gerry Chu. 2009. Back-of-device interaction allows creating very small touch devices. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 1923--1932. Google ScholarDigital Library
- Patrick Baudisch and Carl Gutwin. 2004. Multiblending: displaying overlapping windows simultaneously without the drawbacks of alpha blending. In Proceedings of the SIGCHI conference on Human factors in computing systems, 367--374. Google ScholarDigital Library
- Xiaojun Bi, Barton A. Smith, and Shumin Zhai. 2010. Quasi-qwerty Soft Keyboard Optimization. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '10), 283--286. Google ScholarDigital Library
- Xiaojun Bi and Shumin Zhai. 2016. IJQwerty: What Difference Does One Key Change Make? Gesture Typing Keyboard Optimization Bounded by One Key Position Change from Qwerty. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems, 49--58. Google ScholarDigital Library
- Stanley F Chen and Joshua Goodman. 1999. An empirical study of smoothing techniques for language modeling. Computer Speech & Language 13, 4: 359--393. Google ScholarDigital Library
- James Clawson, Kent Lyons, Alex Rudnick, Robert A. Iannucci, Jr., and Thad Starner. 2008. Automatic Whiteout++: Correcting mini-QWERTY Typing Errors Using Keypress Timing. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '08), 573--582. Google ScholarDigital Library
- Kiran Dandekar, Balasundar I Raju, and Mandayam A Srinivasan. 2003. 3-D finite-element models of human and monkey fingertips to investigate the mechanics of tactile sense. Journal of biomechanical engineering 125, 5: 682--691.Google ScholarCross Ref
- Paul A David. 1985. Clio and the Economics of QWERTY. The American economic review 75, 2: 332--337.Google Scholar
- Mark D Dunlop. 2004. Watch-top text-entry: Can phone-style predictive text-entry work with only 5 buttons? In Mobile Human-Computer Interaction-MobileHCI 2004, 342--346.Google Scholar
- Mark D Dunlop and Andrew Crossan. 2000. Predictive text entry methods for mobile phones. Personal Technologies 4, 2--3: 134--143.Google ScholarCross Ref
- Mark Dunlop and John Levine. 2012. Multidimensional Pareto Optimization of Touchscreen Keyboards for Speed, Familiarity and Improved Spell Checking. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '12), 2669--2678. Google ScholarDigital Library
- Mayank Goel, Leah Findlater, and Jacob Wobbrock. 2012. WalkType: Using Accelerometer Data to Accomodate Situational Impairments in Mobile Touch Screen Text Entry. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '12), 2687--2696. Google ScholarDigital Library
- Mitchell Gordon, Tom Ouyang, and Shumin Zhai. 2016. WatchWriter: tap and gesture typing on a smartwatch miniature keyboard with statistical decoding. 3817--3821. Google ScholarDigital Library
- Beverly L Harrison, Gordon Kurtenbach, and Kim J Vicente. 1995. An experimental evaluation of transparent user interface tools and information content. In Proceedings of the 8th annual ACM symposium on User interface and software technology, 81--90. Google ScholarDigital Library
- Beverly L Harrison and Kim J Vicente. 1996. An experimental evaluation of transparent menu usage. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 391--398. Google ScholarDigital Library
- Sandra G. Hart and Lowell E. Staveland. 1988. Development of NASA-TLX (Task Load Index): Results of Empirical and Theoretical Research. In Advances in Psychology, Peter A. Hancock and Najmedin Meshkati (ed.). North-Holland, 139--183.Google Scholar
- Jon Hasselgren, Erik Montnemery, Pierre Nugues, and Markus Svensson. 2003. HMS: A Predictive Text Entry Method Using Bigrams. In Proceedings of the 2003 EACL Workshop on Language Modeling for Text Entry Methods (TextEntry '03), 43--50. Google ScholarDigital Library
- Niels Henze, Enrico Rukzio, and Susanne Boll. 2011. 100,000,000 taps: analysis and improvement of touch performance in the large. In Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services, 133--142. Google ScholarDigital Library
- Niels Henze, Enrico Rukzio, and Susanne Boll. 2012. Observational and Experimental Investigation of Typing Behaviour Using Virtual Keyboards for Mobile Devices. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '12), 2659--2668. Google ScholarDigital Library
- Christian Holz and Patrick Baudisch. 2010. The generalized perceived input point model and how to double touch accuracy by extracting fingerprints. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 581--590. Google ScholarDigital Library
- Christina James and Michael Longé. 2000. Bringing text input beyond the desktop. In CHI'00 Extended Abstracts on Human Factors in Computing Systems, 49--50. Google ScholarDigital Library
- Eleanor Jones, Jason Alexander, Andreas Andreou, Pourang Irani, and Sriram Subramanian. 2010. GesText: Accelerometer-based Gestural Text-entry Systems. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '10), 2173--2182. Google ScholarDigital Library
- Tomonari Kamba, Shawn A Elson, Terry Harpold, Tim Stamper, and Piyawadee Sukaviriya. 1996. Using small screen space more efficiently. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 383--390. Google ScholarDigital Library
- Jesper Kjeldskov, Mikael B Skov, Benedikte S Als, and Rune T Høegh. 2004. Is it worth the hassle? Exploring the added value of evaluating the usability of context-aware mobile systems in the field. In Mobile human-computer interaction-MobileHCI 2004, 61--73.Google Scholar
- Andreas Komninos and Mark Dunlop. 2014. Text input on a smart watch. Pervasive Computing, IEEE 13, 4: 50--58.Google ScholarCross Ref
- Per-Ola Kristensson and Shumin Zhai. 2004. SHARK 2: a large vocabulary shorthand writing system for pen-based computers. In Proceedings of the 17th annual ACM symposium on User interface software and technology, 43--52. Google ScholarDigital Library
- Cliff Kushler. 1998. AAC: Using a Reduced Keyboard. In Proceedings of the CSUN 98 Conference.Google Scholar
- Luis A Leiva, Alireza Sahami, Alejandro Catalá, Niels Henze, and Albrecht Schmidt. 2015. Text Entry on Tiny QWERTY Soft Keyboards. In Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems, 669--678. Google ScholarDigital Library
- I Scott MacKenzie, Shawn X Zhang, and R William Soukoreff. 1999. Text entry using soft keyboards. Behaviour & information technology 18, 4: 235--244.Google Scholar
- Edith Nesbit. 2004. The Railway Children. Shoes & Ships & Sealing Wax.Google Scholar
- Emma Nicol, Andreas Komninos, and Mark D Dunlop. 2016. A participatory design and formal study investigation into mobile text entry for older adults. International Journal of Mobile Human Computer Interaction 8, 2: 20--46. Google ScholarDigital Library
- Stephen Oney, Chris Harrison, Amy Ogan, and Jason Wiese. 2013. ZoomBoard: A Diminutive Qwerty Soft Keyboard Using Iterative Zooming for Ultra-small Devices. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13), 2799--2802. Google ScholarDigital Library
- Antti Oulasvirta, Anna Reichel, Wenbin Li, Yan Zhang, Myroslav Bachynskyi, Keith Vertanen, and Per Ola Kristensson. 2013. Improving Two-thumb Text Entry on Touchscreen Devices. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13), 2765--2774. Google ScholarDigital Library
- Kurt Partridge, Saurav Chatterjee, Vibha Sazawal, Gaetano Borriello, and Roy Want. 2002. TiltType: accelerometer-supported text entry for very small devices. In Proceedings of the 15th annual ACM symposium on User interface software and technology, 201--204. Google ScholarDigital Library
- Beatrix Potter. 2002. The Tale of Peter Rabbit. Pioneer Drama Service, Inc.Google Scholar
- Philip Quinn and Shumin Zhai. 2016. A Cost-Benefit Study of Text Entry Suggestion Interaction. In Proceedings of the 2016 CHI Conference on Human Factors in Computing Systems, 83--88. Google ScholarDigital Library
- Jochen Rick. 2010. Performance Optimizations of Virtual Keyboards for Stroke-based Text Entry on a Touch-based Tabletop. In Proceedings of the 23Nd Annual ACM Symposium on User Interface Software and Technology (UIST '10), 77--86. Google ScholarDigital Library
- Katie A. Siek, Yvonne Rogers, and Kay H. Connelly. 2005. Fat Finger Worries: How Older and Younger Users Physically Interact with PDAs. In Proceedings of the 2005 IFIP TC13 International Conference on Human-Computer Interaction (INTERACT'05), 267--280. Google ScholarDigital Library
- Keith Vertanen and Per Ola Kristensson. 2011. A Versatile Dataset for Text Entry Evaluations Based on Genuine Mobile Emails. In Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services (MobileHCI '11), 295--298. Google ScholarDigital Library
- Keith Vertanen and Per Ola Kristensson. 2014. Complementing Text Entry Evaluations with a Composition Task. ACM Trans. Comput.-Hum. Interact. 21, 2: 8:1--8:33. Google ScholarDigital Library
- Keith Vertanen, Haythem Memmi, Justin Emge, Shyam Reyal, and Per Ola Kristensson. 2015. VelociTap: Investigating Fast Mobile Text Entry Using Sentence-Based Decoding of Touchscreen Keyboard Input. In Proceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems (CHI '15), 659--668. Google ScholarDigital Library
- David J Ward, Alan F Blackwell, and David JC MacKay. 2000. Dasher---a data entry interface using continuous gestures and language models. In Proceedings of the 13th annual ACM symposium on User interface software and technology, 129--137. Google ScholarDigital Library
- Daniel Wigdor and Ravin Balakrishnan. 2004. A Comparison of Consecutive and Concurrent Input Text Entry Techniques for Mobile Phones. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '04), 81--88. Google ScholarDigital Library
- Jacob O Wobbrock, Brad A Myers, and John A Kembel. 2003. EdgeWrite: a stylus-based text entry method designed for high accuracy and stability of motion. In Proceedings of the 16th annual ACM symposium on User interface software and technology, 61--70. Google ScholarDigital Library
- Shumin Zhai and Per Ola Kristensson. 2012. The Word-gesture Keyboard: Reimagining Keyboard Interaction. Commun. ACM 55, 9: 91--101. Google ScholarDigital Library
Index Terms
- Text entry tap accuracy and exploration of tilt controlled layered interaction on Smartwatches
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