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This paper aims to contribute to the Voice User Interface Systems area by establishing directions to be used during the Requirements Engineering phase of the development of this type of system. The process of Requirements Engineering proposed here takes into account specific characteristics of voice user interface, and is based on concepts deriving from the Software Engineering area, namely the elicitation, specification, and evaluation phases. In order to illustrate the process, a case study is discussed and presented, as well as the conclusions obtained during the development of the research. Requirement Engineering Contributions to Voice User Interface

Technology allows users to interact with a wide variety of information and services. However, more and more users need to integrate complementary content to previously accessed information. Crossmedia applications combine different information pieces, which are stored in different media, as a continuous story. Our study selects the particular case of combining printed material and internet resources for the purpose of delivering complementary information to users. Our investigation conducts a workshop with users composed of a scenario-driven interview and a talk-aloud protocol. This experiment reveals the behavior and difficulties of users when they are combining digital and non-digital media to gather complementary information. In addition, some recommendation is suggested focused on the improvement of the user's experience in crossmedia application that should be considered by designers.

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In this chapter, wearables are presented as assistive technology to support persons with disabilities (PwD) to face the urban space in an autonomous and independently way. In the Inclusive Smart City (ISC), everyone has to be able to access visual and audible information that so far are available just for people that can perfectly see and listen. Several concepts and technologies – such as Accessibility and Universal Design, Pervasive Computing, Wearable Computing, Internet of Things, Artificial Intelligence, and Cloud Computing – are associated to achieve this aim. Also, this chapter discusses some examples of use of wearables in the context of Smart Cities, states the importance of these devices to the successful implementation of Inclusive Smart Cities, as well as presenting challenges and future research opportunities in the field of wearables in ISC.