A number of HCI studies reported thematic analysis method as a useful tool for evaluating existing technologies and informing design of new technologies. Whilst these studies reported on the resulting designs, they lacked detailed account about the use of the method itself or how the output of the method was linked to proposed designs. To explore this ‘knowledge gap’, thematic analysis method was applied to a data set resulting from semi-structured interviews conducted with five families. The adaptation of the thematic analysis approach led to a new ‘output’ in which findings were structured into a Design Map consisting of Categories, Themes and Codes. The usefulness of this Design Map in the process of design was evaluated in a study conducted with participants studying design at an undergraduate level. This paper describes the rationale for using Lean UX approach to refine the aims of the study and reports results from the Exit Questionnaires aiming to elicit participants’ opinions about the use of a Design Map in the process of design.