With the increase of population longevity, several areas of knowledge and human performance are naturally turning their attention towards ageing in multiple and even antagonistic approaches. In this scenario, this thesis goal is to establish directions for the activity of design in an ageing world. Due to the interdisciplinary essence of design, the first step was to investigate what ageing is in a bibliographic review that included publications from different areas of knowledge focusing on the health sciences. The World Health Organization s World Report on Ageing and Health was highlighted for addressing the subject from the perspective of the body, the individual, and society. Because design activity aims at transforming realities for the better, definitions of successful, active, and healthy ageing were investigated. The following relevant concepts for action were then identified: functionality, independence, autonomy and resilience. Due to the endless possibilities of action towards better ageing, this research extract is defined particularly by the functional changes related to ageing. Since materializing solutions into tangible products is the bedrock of design, searching for products intended to mitigate these changes was the focus of our reflections. Considering design also as an activity which focuses on the individual, qualitative methods were created with the objective of favoring first-hand reports on the experiences of ageing, of the concepts identified, and of the feelings and behaviors involved in the decision to use or not to use assistive objects.