Abstract
Predictive text entry provides a fast way to enter text on phones and other small devices. Early work on predictive text entry highlighted that the reaction time for checking the screen dominates text entry times. Improving accuracy of predictions brings a downside: as prediction gets better, users will drop the slow operation of checking the screen and will thus miss prediction errors and system feedback/suggestions. In this note, we present an experiment into the use of vibration to alert the user when word completion is likely to aid them, using a dynamic approach based on their current typing speed, and when there are no dictionary matches to their entry. Results show significantly faster entry rates for users with vibration alerts, raising speeds from 20wpm to 23wpm once practiced.
Original language | English |
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Title of host publication | CHI '09 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems |
Pages | 2257-2260 |
Number of pages | 4 |
DOIs | |
Publication status | Published - 2009 |
Event | CHI '09: 27th International Conference on Human Factors in Computing Systems - Boston, MA, USA Duration: 4 Apr 2009 → 9 Apr 2009 |
Conference
Conference | CHI '09: 27th International Conference on Human Factors in Computing Systems |
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City | Boston, MA, USA |
Period | 4/04/09 → 9/04/09 |
Keywords
- Text entry
- mobiles
- tactile feedback