Non-keyboard QWERTY touch typing: a portable input interface for the mobile user

Authors:
Mikael Goldstein;Robert Book;Gunilla Alsiö;Silvia Tessa
Affiliations:
Ericsson Radio Systems AB, Applications Research ERA/T/K, Torshamnsgatan 23, Kista, SE-164 80 Stockholm, Sweden;Logica Svenska AB, Applications Research ERA/T/K, Torshamnsgatan 23, Kista, SE-164 80 Stockholm, Sweden and Ericsson Radio Systems AB, Applications Research ERA/T/K, Torshamnsgatan 23, Kista, SE-1 ...;Ericsson Radio Systems AB, Applications Research ERA/T/K, Torshamnsgatan 23, Kista, SE-164 80 Stockholm, Sweden;Ericsson Radio Systems AB, Applications Research ERA/T/K, Torshamnsgatan 23, Kista, SE-164 80 Stockholm, Sweden
Venue:
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Year:
1999

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Abstract

Using traditional mobile input devices results in decreasedeffectiveness and efficiency. To improve usability issues aportable Non-Keyboard QWERTY touch-typing paradigm that supportsthe mobile touch-typing user is presented and investigated. Itrequires negligible training time. Pressure sensors strapped to thefingertips of gloves detect which finger is depressed. A languagemodel based on lexical and syntactic knowledge transforms thedepressed finger stroke sequence into real words and sentences.Different mobile input QWERTY paradigms (miniaturised, floating andNon-Keyboard) have been compared with full-size QWERTY. Among themobile input paradigms, the Non-Keyboard fared significantlybetter, both regarding character error rate and subjectiveratings.