A medium fidelity prototype is a prototype with limited functionality but clickable areas which presents the interactions and navigation possibilities of an application. Medium fidelity prototypes are usually built upon storyboards or user scenarios. Through these prototypes plots can be more easily presented. A correct content description is emphasized. For every action step a basic visual design is created. The medium fidelity prototype is suited for the validation of the interaction concept. In contrast to a paper prototype the understandability of interaction elements can be validated.
The impression of an already functioning application makes it easy for all stakeholders to derive processes from the range of features. This way the solution can be developed in the sense of the prototype.