Cirrin: a word-level unistroke keyboard for pen input
Proceedings of the 11th annual ACM symposium on User interface software and technology
Quikwriting: continuous stylus-based text entry
Proceedings of the 11th annual ACM symposium on User interface software and technology
The design and evaluation of a high-performance soft keyboard
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Predicting text entry speed on mobile phones
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
The metropolis keyboard - an exploration of quantitative techniques for virtual keyboard design
UIST '00 Proceedings of the 13th annual ACM symposium on User interface software and technology
LetterWise: prefix-based disambiguation for mobile text input
Proceedings of the 14th annual ACM symposium on User interface software and technology
Movement model, hits distribution and learning in virtual keyboarding
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Running Microsoft Word for Windows 95
Running Microsoft Word for Windows 95
TiltType: accelerometer-supported text entry for very small devices
Proceedings of the 15th annual ACM symposium on User interface software and technology
A character-level error analysis technique for evaluating text entry methods
Proceedings of the second Nordic conference on Human-computer interaction
Shorthand writing on stylus keyboard
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Metrics for text entry research: an evaluation of MSD and KSPC, and a new unified error metric
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
Touch-Tone input techniques: Data entry using a constrained keyboard
ACM '74 Proceedings of the 1974 annual conference - Volume 1
EdgeWrite: a stylus-based text entry method designed for high accuracy and stability of motion
Proceedings of the 16th annual ACM symposium on User interface software and technology
TiltText: using tilt for text input to mobile phones
Proceedings of the 16th annual ACM symposium on User interface software and technology
Twiddler typing: one-handed chording text entry for mobile phones
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A reduced QWERTY keyboard for mobile text entry
CHI '04 Extended Abstracts on Human Factors in Computing Systems
SHARK2: a large vocabulary shorthand writing system for pen-based computers
Proceedings of the 17th annual ACM symposium on User interface software and technology
Expert Chording Text Entry on the Twiddler One-Handed Keyboard
ISWC '04 Proceedings of the Eighth International Symposium on Wearable Computers
Entering text with a four-button device
COLING '02 Proceedings of the 19th international conference on Computational linguistics - Volume 1
ISWC '05 Proceedings of the Ninth IEEE International Symposium on Wearable Computers
Analyzing the input stream for character- level errors in unconstrained text entry evaluations
ACM Transactions on Computer-Human Interaction (TOCHI)
Earpod: eyes-free menu selection using touch input and reactive audio feedback
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Tlk or txt? Using voice input for SMS composition
Personal and Ubiquitous Computing
Fitts' law as a research and design tool in human-computer interaction
Human-Computer Interaction
Tilt techniques: investigating the dexterity of wrist-based input
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
GesText: accelerometer-based gestural text-entry systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
SAK: Scanning ambiguous keyboard for efficient one-key text entry
ACM Transactions on Computer-Human Interaction (TOCHI)
Eyes-free text entry with error correction on touchscreen mobile devices
Proceedings of the 6th Nordic Conference on Human-Computer Interaction: Extending Boundaries
BrailleType: unleashing braille over touch screen mobile phones
INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part I
The 1line keyboard: a QWERTY layout in a single line
Proceedings of the 24th annual ACM symposium on User interface software and technology
A Maximum Likelihood Approach to Continuous Speech Recognition
IEEE Transactions on Pattern Analysis and Machine Intelligence
No-look notes: accessible eyes-free multi-touch text entry
Pervasive'10 Proceedings of the 8th international conference on Pervasive Computing
User learning and performance with bezel menus
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Input finger detection for nonvisual touch screen text entry in Perkinput
Proceedings of Graphics Interface 2012
The word-gesture keyboard: reimagining keyboard interaction
Communications of the ACM
An evaluation of BrailleTouch: mobile touchscreen text entry for the visually impaired
MobileHCI '12 Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services
Proceedings of the 25th annual ACM symposium on User interface software and technology
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We introduce a distinction between disambiguation supporting continuous versus discrete ambiguous text entry. With continuous ambiguous text entry methods, letter selections are treated as ambiguous due to expected imprecision rather than due to discretized letter groupings. We investigate the simple case of a one-dimensional character layout to demonstrate the potential of techniques designed for imprecise entry. Our rotation-based sight-free technique, Rotext, maps device orientation to a layout optimized for disambiguation, motor efficiency, and learnability. We also present an audio feedback system for efficient selection of disambiguated word candidates and explore the role that time spent acknowledging word-level feedback plays in text entry performance. Through a user study, we show that despite missing on average by 2.46--2.92 character positions, with the aid of a maximum a posteriori (MAP) disambiguation algorithm, users can average a sight-free entry speed of 12.6wpm with 98.9% accuracy within 13 sessions (4.3 hours). In a second study, expert users are found to reach 21wpm with 99.6% accuracy after session 20 (6.7 hours) and continue to grow in performance, with individual phrases entered at up to 37wpm. A final study revisits the learnability of the optimized layout. Our modeling of ultimate performance indicates maximum overall sight-free entry speeds of 29.0wpm with audio feedback, or 40.7wpm if an expert user could operate without relying on audio feedback.