Text input for mobile devices: comparing model prediction to actual performance
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
LetterWise: prefix-based disambiguation for mobile text input
Proceedings of the 14th annual ACM symposium on User interface software and technology
The Reactive Keyboard
Web accessibility for low bandwidth input
Proceedings of the fifth international ACM conference on Assistive technologies
KSPC (Keystrokes per Character) as a Characteristic of Text Entry Techniques
Mobile HCI '02 Proceedings of the 4th International Symposium on Mobile Human-Computer Interaction
Designing human-computer interfaces for quadriplegic people
ACM Transactions on Computer-Human Interaction (TOCHI)
Towards an adaptive communication aid with text input from ambiguous keyboards
EACL '03 Proceedings of the tenth conference on European chapter of the Association for Computational Linguistics - Volume 2
Entering text with a four-button device
COLING '02 Proceedings of the 19th international conference on Computational linguistics - Volume 1
Text prediction systems: a survey
Universal Access in the Information Society
Investigating text input methods for mobile phones
Telematics and Informatics
Word-based predictive text entry using adaptive language models
Natural Language Engineering
Ambiguous Keyboards and Scanning: The Relevance of the Cell Selection Phase
INTERACT '09 Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction: Part II
A prototype scanning system with an ambiguous keyboard and a predictive disambiguation algorithm
ICCHP'10 Proceedings of the 12th international conference on Computers helping people with special needs
ICCHP'10 Proceedings of the 12th international conference on Computers helping people with special needs
Evaluation of an ambiguous-keyboard prototype scanning-system with word and character disambiguation
BCS '10 Proceedings of the 24th BCS Interaction Specialist Group Conference
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People with severe motor disabilities have extreme access difficulties with all kinds of web services especially when they want not only to surf the web, but also write some text, e.g., to participate in an e-activity. Several problems arise when using traditional scanning systems, such as the low text entry rate, the time consuming task of learning the scan matrix layout, or simply, the poor visibility of the web page due to the large surface needed to display the complete scan matrix on the screen. We propose a reduced virtual keyboard based on scanning with only one switch as input device. The scan matrix consists of only three cells, so ambiguity is present due to the assignment of 26 characters to the three keys. Word-level and character-level disambiguation modes are explored using a mathematical model, and the text entry rates for an expert user were 15.9 and 10.3 words per minute respectively, using a scan period of 0.5 seconds. This keyboard could be embedded into a web page using a Java applet, JavaScript code or a Flash application, or be programmed as an independent application.