Developing character input methods for driver information systems

This study proposes a framework for developing an input method to enter characters into a driver information system (DIS). The framework consists of two phases. The first phase is a conceptual design phase that helps to create and design conceptual input methods and to conduct formative evaluation. The second phase is a detail design phase that helps to design detailed interfaces and interaction, and to select the most usable character input method. A case study is conducted to verify the effectiveness of the developed methodology and to find appropriate input methods for knob control. As a result, character input methods appropriate for knob control were developed, which were proved to work more effectively than an existing method.