Visual Requirement Specification In End-User Participation

End-user participation in requirements engineering (RE) is important, but not frequently used at the moment. Reasons are the large expenditure of time for organizing and carrying out surveys as well as the time it takes to understand the users' requirements and to formulate them textually. But even textually formulated requirements are not sufficient, as users are no experts, do not have enough time beside their job to model complex requirements and describe their requirements properly. It is therefore necessary to formulate the requirements visually. Actual methods are too complex and inefficient, because they need training and can't be integrated into the day-to-day business of end-users. Thus, users should be able to annotate their ideas directly on their screen and submit them to a web based collaboration platform. The main goal is to obtain complete requirements and, simultaneously, to save the time of all stakeholders in the whole development process.