Experiences in conceiving and prototyping a commercial business application using multi-touch technology

In this paper, we describe methods and challenges regarding the conception and prototypical implementation of a business application that uses multi-touch technology in its input device. We illustrate the use of a new conception and specification approach called DESIGNi and our experiences using the new Microsoft Expression Studio, which is specifically intended to support the development of commercial multi-touch software. We focused on the redesign of an application called "Graphical Knowledge Editor" (GKE), which is used to model processes and workflows of a call center. This system was evaluated in a study that showed how the users perceived the quality of the new software.