“…Besides testing and evaluation, prototypes are also being used in a more generative manner, for example, to foster ideation processes and to facilitate communication among various stakeholders, thereby considering prototypes as "tangible thinking tools" [27,40]. In this vein, Henderson et al for example report how they employed rapid modular prototypes to augment user interviews in the context of a study on parking meters, leading to richer discussions between users and design researchers [17].…”