Quikwriting: continuous stylus-based text entry
Proceedings of the 11th annual ACM symposium on User interface software and technology
Dual touch: a two-handed interface for pen-based PDAs
UIST '00 Proceedings of the 13th annual ACM symposium on User interface software and technology
On the road and on the Web?: comprehension of synthetic and human speech while driving
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Peephole displays: pen interaction on spatially aware handheld computers
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Phrase sets for evaluating text entry techniques
CHI '03 Extended Abstracts on Human Factors in Computing Systems
Examining mobile phone text legibility while walking
CHI '04 Extended Abstracts on Human Factors in Computing Systems
Two-handed interaction on a tablet display
CHI '04 Extended Abstracts on Human Factors in Computing Systems
AppLens and launchTile: two designs for one-handed thumb use on small devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Gait phase effects in mobile interaction
CHI '05 Extended Abstracts on Human Factors in Computing Systems
Mobile text entry: relationship between walking speed and text input task difficulty
Proceedings of the 7th international conference on Human computer interaction with mobile devices & services
Proceedings of the 7th international conference on Human computer interaction with mobile devices & services
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Target size study for one-handed thumb use on small touchscreen devices
Proceedings of the 8th conference on Human-computer interaction with mobile devices and services
Reading on-the-go: a comparison of audio and hand-held displays
Proceedings of the 8th conference on Human-computer interaction with mobile devices and services
Capturing the effects of context on human performance in mobile computing systems
Personal and Ubiquitous Computing
Investigating the effectiveness of tactile feedback for mobile touchscreens
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The effects of walking speed on target acquisition on a touchscreen interface
Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
CrashAlert: enhancing peripheral alertness for eyes-busy mobile interaction while walking
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
| Hi-index | 0.00 |
Effective text entry on handheld devices remains an important user input problem. On a personal digital assistant (PDA), text entry methods traditionally support stylus-based input performed by the user's dominant hand. In this paper, we present the design of a two-handed software keyboard for a PDA which specifically takes advantage of the thumb in the non-dominant hand. We compare our chorded keyboard design to other stylus-based text entry methods in an evaluation that studies user input in different user mobility states. Our study shows that users type fastest using the mini-qwerty keyboard, and most accurately using our two-handed keyboard. We also discover a difference in input performance with the mini-qwerty keyboard between stationary and mobile states. As a user walks, text input speed decreases while error rates and mental workload increases; however, these metrics remain relatively stable in our two-handed technique despite user mobility.