CHI '93 Proceedings of the INTERACT '93 and CHI '93 Conference on Human Factors in Computing Systems
The immediate usability of graffiti
Proceedings of the conference on Graphics interface '97
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
Text input for mobile devices: comparing model prediction to actual performance
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A character-level error analysis technique for evaluating text entry methods
Proceedings of the second Nordic conference on Human-computer interaction
Measuring errors in text entry tasks: an application of the Levenshtein string distance statistic
CHI '01 Extended Abstracts on Human Factors in Computing Systems
Shorthand writing on stylus keyboard
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Supporting notable information in office work
CHI '03 Extended Abstracts on Human Factors in Computing Systems
Twiddler typing: one-handed chording text entry for mobile phones
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Understanding the micronote lifecycle: improving mobile support for informal note taking
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Comparing the immediate usability of graffiti 2 and virtual keyboard
CHI '04 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
Expert Chording Text Entry on the Twiddler One-Handed Keyboard
ISWC '04 Proceedings of the Eighth International Symposium on Wearable Computers
Why use memo for all?: restructuring mobile applications to support informal note taking
CHI '05 Extended Abstracts on Human Factors in Computing Systems
An empirical comparison of use-in-motion evaluation scenarios for mobile computing devices
International Journal of Human-Computer Studies
ISWC '05 Proceedings of the Ninth IEEE International Symposium on Wearable Computers
Motion does matter: an examination of speech-based text entry on the move
Universal Access in the Information Society
Capturing the effects of context on human performance in mobile computing systems
Personal and Ubiquitous Computing
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Mobile information technologies are theoretically well-suited to digitally accomodate informal note-taking, with the notes often recorded quickly and under less than ideal circumstances. Unfortunately, user adoption of mobile support for informal note-taking has been hindered in large part by slow text entry techniques. Building on research confirming people's ability to recognize erroneous text, this study explores two simple modifications to Graffiti-based text entry with the goal of increasing text entry speed: disabling text correction and disabling visual feedback. As expected, both modifications improved text entry speed at the cost of recognizability. To address the decrease in recognizability, a multiapproach text-enhancement algorithm is introduced with the goal of modifying the erroneous note to facilitate the process of recalling the event or activity that originally motivated the note. A study with 75 participants confirmed that the proposed approach of discouraging user-initiated error correction during note-taking, enhancing the resulting erroneous notes, and facilitating recall with enhanced alternative lists, increased note-taking speed by 47% with no negative impact on the participants' ability to recall important details about the scenarios which prompted the note-taking activities. This research highlighs the importance and efficacy of shifting the focus from accuracy to recallability when examining the overall efficacy of informal notes. The proposed modifications and adaptations produce significant benefits and have important implications for how mobile technologies are designed to support both informal note-taking and text entry in general.