Text Editing in Digital Terrestrial Television: A Comparison of Three Interfaces

Abstract

This chapter introduces the usability problems regarding text entry using a remote control in digital terrestrial television (DTT) context. It describes the comparison of three different text editing interfaces: (1) the multi-press with timeout, (2) the multi-press with timeout and visual feedback, and (3) the virtual keyboard interface. This chapter describes a test based on a within-group design: The authors analyse the efficiency, the effectiveness, and the user’s satisfaction of the three interfaces mentioned previously. The study shows a significant relationship between the users’ level of experience in text editing using a mobile phone and their favourite interface. Moreover, the analysis demonstrates that there is no relationship between users’ level of experience and the editing problems they encountered. The authors hope that this study will help interactive application developers in designing usable interfaces for text entry using a remote control.