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 multitouch 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.