Ubiquitous computing can significantly improve the general public's quality of life worldwide from birth to old age because it allows monitoring, awareness and support in many environments thanks to sensors, actuators, remote connections, and dedicated knowledge bases. However, ageing influences its usefulness and appropriateness due to growth and decline as well as changes in activities and uses of technology. We discuss potential dedicated services with smart spaces and wearable computers based on the cognitive, physical, physiological, and sensory characteristics of young people and older adults. Our main contribution is to show that existing services support few age-specific needs, and that designs miss age-appropriate techniques, taking into account the whole life span with personal, public and shared systems.