Mobile text entry using three keys
Proceedings of the second Nordic conference on Human-computer interaction
Phrase sets for evaluating text entry techniques
CHI '03 Extended Abstracts on Human Factors in Computing Systems
A Pair of Braille-Based Chord Gloves
ISWC '02 Proceedings of the 6th IEEE International Symposium on Wearable Computers
Techniques for Fast and Easy Mobile Text-Entry with Three-Keys
HICSS '04 Proceedings of the Proceedings of the 37th Annual Hawaii International Conference on System Sciences (HICSS'04) - Track 9 - Volume 9
Twiddler typing: one-handed chording text entry for mobile phones
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The chording glove: a glove-based text input device
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
Bimanual text entry using game controllers: Relying on users' spatial familiarity with QWERTY
Interacting with Computers
From texting app to braille literacy
CHI '12 Extended Abstracts on Human Factors in Computing Systems
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This study addresses to what degree spatial mnemonics can be used to assist users to memorise or infer a set of text input chords. Users mentally visualise the appearance of each character as a 3x3 pixel grid. This grid is input as a sequence of three chords using one, two or three fingers to construct each chord. Experiments show that users are able to use the strategy after a few minutes of instruction, and that some subjects enter text without help after three hours of practice. Further, the experiments show that text can be input at a mean rate of 5.9 words per minute (9.9 words per minute for the fastest subject) after 3 hours of practice. On the downside, the approach suffers from a relatively high error rate of about 10% as subjects often resort to trial and error when recalling character patterns.