It was very valuable to see how many technical details are influencing user experiences and how much you have to be aware, if you want to develop your product according to user needs. It was a great experience for us to see how user centered development can be part of the daily life. Effects that can be achieved by means of co-creation in public health should not be underestimated. Not only the promotion of self-determination and satisfaction, but also cost savings for the health care system have already been demonstrated. Co-creation should be part of public health, the development of assistive technologies for patients and seniors as well as in the further development of health services.