Compared with the past, when text entry is mainly through a standard keyboard "qwerty", people today use a variety of devices with the number and variety of these devices continues to rise. This book consists of four parts, and covers the areas: Guidelines for Designing Better Entry Systems (including research methodology, measurement, and modeling language); Devices and Modalities, Languages of the world and entry systems in these languages, and diversity of users and their difficulties with text-entry solutions and designs as possible and guidelines for those individual user groups. This book covers various aspects of text entry systems and offers prospective researchers and developers * Global guidelines for conducting research on text entry, in terms of design strategies, evaluation methodologies, and requirements; * History and current state of the art entrance systems, including coverage of new research topics; * Guidelines for designing an entry system for a specific target, depending on the device, modality, language, and physical conditions which differ from the user