Scenario-based design is a largely accepted method within the literature on Human-Computer Interaction and, for certain cases, also within the literature on Software Engineering. However, the lack of integration between these two areas, in addition to the lack of attention paid to the actual (and still quite infrequent) use of scenario-based design, stresses the need for increased emphasis on the relevance of scenario-based design applied to projects of truly innovative technological artefacts. In the present paper, we will present a case report whereby the above mentioned method, when applied to problem-analysis, led to the project of a differential user-interface environment when compared to the human process prior to the introduction of the computational application.