Alphabetically biased virtual keyboards are easier to use: layout does matter
CHI '01 Extended Abstracts on Human Factors in Computing Systems
Keylekh: a keyboard for text entry in indic scripts
CHI '04 Extended Abstracts on Human Factors in Computing Systems
Alphabetically constrained keypad designs for text entry on mobile devices
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Design and Evaluation of Soft Keyboards for Brahmic Scripts
ACM Transactions on Asian Language Information Processing (TALIP)
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Lack of an easy and efficient text input mechanism in Indic scripts has been a barrier to large-scale adoption of ICTs in India. We present findings from a usability evaluation of three keyboard designs for Indic scripts for touch screen phones. The design of one of the keyboards is based on the frequency of characters, while the designs of the other two are based on the logical structure of the script. We evaluated the keyboards with participants with low-level of education through a first-time usability test and a longitudinal usability test. One of the logically structured keyboards started out with significantly higher success rate, typing speed, and lesser errors than the other two. The longitudinal test involving text input of 500 words did not conclusively prove that either design was better. Our study establishes benchmarks for text input speeds, errors and ratings for the initial learning phase for text input in Marathi among less educated users.