Supporting users’ navigation is a fundamental feature of mobile guides. This paper presents an experimental evaluation comparing three different ways of providing navigation gu...
MailCall is a telephone-based messaging system using speech recognition and synthesis. Its nonvisual interaction approaches the usability of visual systems through a combination o...
: Users and the context of use are the heart of user-centred design. If the users’ tasks are irregular or varying the information gathering is difficult. In our study we used pho...
This paper presents an approach for representing, and providing computer support for, the configuration of interactive systems, particularly ubiquitous systems, that offers a flexi...
Animation or sound is often used in user interfaces as an attempt to improve users' perception and comprehension of evolving situations and support them in decision-making. Ho...