Involving elderly users in design: techniques to collect preferences for interactive digital television.

SeniorChannel is a European project that explores the potential of using an Interactive Digital Television (IDTV) to turn elderly people at home into an active audience. Techniques to involve elderly users in the requirement collection during the design phase should take into account the decrease in perception, cognition and motor abilities associated with aging. The paper describes the specific solutions adopted here to elicit users' contribution, as well as the contributed preferences in terms of IDTV content and interaction modalitie