Motivation – If modelling is included in the requirements analysis phase of a systematic interaction design method, it mostly focuses on some kind of formalism, e.g., task modelling and requirements specification. However, when designing in collaboration with non-expert, stakeholders this will not work.

Approach – This workshop will allow exchange of ideas, experiences, techniques and tools for collaboration with stakeholders of interaction design early in the design process, in order to aim at a more creative as well as more user-centred requirement development.

Limitations/Implications – Our finding will in no way guarantee "the best design solution", but they show a type of creative collaboration between stakeholders and designers in a very early design phase, which allows considering and exploring new solutions before these need to be prototyped or implemented.

Originality/Value – The techniques we intend to discuss are in no way new, however their application early in design in this open ended approach is not well documented and, hence, awareness and comparing notes on successes and failure experiences will allow us to learn from each other and help us develop a general understanding among interaction designers.

Take away message – Non-formal modelling tools and techniques for early collaboration with stakeholders are relatively cheap and, at the other hand, uniquely stimulating techniques for identifying both the boundaries and the opportunities of the design space for interactive systems.