Resumen
Nowadays, the end-user?s emotional engagement on commercial products has become more and more highlighted. Product developers? and designers? jobs are beyond the aesthetic face to new requirements that improve the user experience. One of the most important user demands is customization. Based on the new manufacturing technologies, there are some new opportunities to customize mass production output. Many automotive companies offer a wide variety of car components produced by request on the customers. The customization establishes the emotional engagement, but specific psychological background required to achieve it. This article deals with the scientific background of users? emotions and geometric patterns (as an important feature of product customization). The related research covers the algorithmic generation of these patterns and soft computing control on this procedure. The method was developed based on fuzzy logic, which integrates the psychological aspects in the mathematical method.