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Abstract. Walk-up-and-use-systems such as vending and self-service machines request special attention concerning an easy to use and self-explanatory user interface. In this paper we present a set of design guidelines for coffee vending machines based on the results of an expert-based usability evaluation of thirteen different models.

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This paper presents an interdisciplinary approach to transfer knowledge of human-centered design and usability engineering to the field of communication planning. Communication planning is a systematic process to identify target groups for specific marketing goals and when and how to reach them. We believe that by transferring methods and an overall iterative design process effectiveness and efficiency of the communication planning process as well as the overall success could be improved.