General-purpose text entry rules for devices with 4×3 configurations of buttons

Abstract

General-purpose rules for entering texts on devices with 4×3 configurations of buttons are suggested. The rules support simple, consistent and intuitive entering of alphabets as well as numbers and symbols found on most computer keyboards. These rules together with appropriate layouts of alphabets and symbols may provide a common, consistent and powerful framework to devising text-input methods across diverse devices and languages. © Springer-Verlag Berlin Heidelberg 2005.