Usability Test of Communication System for the Disabled

Abstract

The communication system in Lithuanian language for disabled was researched. System allows typing, editing text, send, receive,forward, replay e-mail using one On-Off button and scanning at the same time, two or eleven On-Off buttons keyboard withoutscanning. There are possibilities to save and delete received mails and files created by user. Also there are possibilities to edit e-mailaddress book. Disabled user can select one of four keyboards; also user can select scanning speed. Healthy person can enter anyonepossible scanning speed. Research discover that disabled depending on text typing method and the type of keyboard can achieve texttyping speed from 8 to 24 symbols per minute. The decision was made to reject eleven On-Off button text typing and program controlmethod and reject both Latin keyboards. Also the authors notice a need to improve the prediction algorithm’s productivity. Ill. 3, bibl. 7(in English; summaries in Lithuanian, English and Russian).