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Television can be considered one of the main means of mass entertainment. It occupies an important place in people's lives, influencing behavior and creating and/or enforcing consumer's habits and needs. With the advent of Digital Television, a series of new features tend to further impact upon society in many different ways. The main agent of this change is interactivity, which is the leverage that will transform the traditional viewer's role. Interactivity turns the viewer into a user, a partner who receives the content, but also produces, participates and collaborates during the viewing process. This paper aims to discuss the importance of applying interaction design in the development of projects related to digital television. The main factors that may contribute to improve the interaction design in applications for digital TV were identified drawing on a descriptive and qualitative method of investigation. The results showed that the interface design for this new media should not only be aesthetically appealing, but should also focus on usability (i.e. user's wishes and needs). Additionally, the creation of these interfaces requires the investigation of some characteristics and limitations of device interaction, considering the choice of colors, saturation levels and brightness, avoiding graphic symbols and prioritizing the navigation through the numerical buttons of the remote control.

Towards the application of interaction design to digital TV content development