New chording text entry methods combining physical and virtual buttons on a mobile phone.

Traditional mobile phones depend on MultiTap, virtual or physical QWERTY keyboard for text entry, and they had some respective drawbacks include low input performance, occupying too large an area, high error rates, lack of feedbacks, etc. Therefore, some researches utilized the characteristics of the chording keyboard to improve input performance. Yet, as the learning efficiency of the chording keyboard is too low, users are not highly willing to learn. In view of that, this study combines the physical and virtual keys, and develops two chording input methods, MagArea and MemoryTap. After three days of learning, the fourteen experiment participants show effectively reduce error rates on MagArea, and they enhance their input speed on MemoryTap. In addition, excellent learning efficiency is found in the two methods, will be more motivated and willing to employ.

[1]  Alexander H. Waibel,et al.  Model-based and empirical evaluation of multimodal interactive error correction , 1999, CHI '99.

[2]  Per Ola Kristensson,et al.  Discrete and Continuous Shape Writing for Text Entry and Control , 2007 .

[3]  I. Scott MacKenzie,et al.  Predicting text entry speed on mobile phones , 2000, CHI.

[4]  Hussain Tinwala,et al.  Eyes-free text entry on a touchscreen phone , 2009, 2009 IEEE Toronto International Conference Science and Technology for Humanity (TIC-STH).

[5]  Vimala Balakrishnan,et al.  A study of the effect of thumb sizes on mobile phone texting satisfaction , 2008 .

[6]  Peter Schroeder-Heister,et al.  Spatial S-R compatibility with orthogonal stimulus-response relationship , 1989, Perception & psychophysics.

[7]  Patrick Baudisch,et al.  Lucid touch: a see-through mobile device , 2007, UIST.

[8]  Mohamed Sheik-Nainar.  Contact Location Offset to Improve Small Target Selection on Touchscreens , 2010 .

[9]  R. C. Oldfield.  The assessment and analysis of handedness: the Edinburgh inventory. , 1971, Neuropsychologia.

[10]  Geehyuk Lee,et al.  Qwerty-like 3x4 keypad layouts for mobile phone , 2005, CHI Extended Abstracts.

[11]  R. William Soukoreff,et al.  Text entry for mobile computing: models and methods , 2002 .

[12]  G. Logan.  Simon-type effects: chronometric evidence for keypress schemata in typewriting. , 2003, Journal of experimental psychology. Human perception and performance.

[13]  Marita A. O'Brien.  Effects of Shape, Letter Arrangements, and Practice on Text Entry on a Virtual Keyboard , 2006 .

[14]  Mathieu Raynal,et al.  Evaluation of SpreadKey System with Motor Impaired Users , 2010, ICCHP.

[15]  David J. Ostry,et al.  Mirror-Image Movements in Typing , 1983 .

[16]  Kent Lyons,et al.  Experimental Evaluations of the Twiddler One-Handed Chording Mobile Keyboard , 2006, Hum. Comput. Interact..

[17]  Feng Wang,et al.  Empirical evaluation for finger input properties in multi-touch interaction , 2009, CHI.

[18]  I. Scott MacKenzie,et al.  KSPC (Keystrokes per Character) as a Characteristic of Text Entry Techniques , 2002, Mobile HCI.

[19]  J E Gold,et al.  Postures, typing strategies, and gender differences in mobile device usage: an observational study. , 2012, Applied ergonomics.

[20]  P. Fitts.  The information capacity of the human motor system in controlling the amplitude of movement. , 1954, Journal of experimental psychology.

[21]  Frode Eika Sandnes,et al.  Bimanual text entry using game controllers: Relying on users' spatial familiarity with QWERTY , 2007, Interact. Comput..

[22]  Daniel J. Wigdor,et al.  TiltText: using tilt for text input to mobile phones , 2003, UIST '03.

[23]  Edward Cutrell,et al.  Bimanual Interaction on the Microsoft Office Keyboard , 2003, INTERACT.

[24]  Yaw-Huei Hwang,et al.  Effects of input methods on inter-key press intervals during continuous typing , 2009, Ergonomics.

[25]  Kent Lyons,et al.  Twiddler typing: one-handed chording text entry for mobile phones , 2004, CHI.

[26]  I. Scott MacKenzie,et al.  Half-QWERTY: a one-handed keyboard facilitating skill transfer from QWERTY , 1993, INTERCHI.