RADIO pursues a novel approach to acceptance and unobtrusiveness: a system where sensing equipment is not discrete but an obvious and accepted part of the user’s daily life. User attention is directed to the functionality of the sensors that no longer need to be discrete and distant or masked and cumbersome to install; they do however need to be perceived as a natural component of the smart home/assistant robot functionalities. The clinical requirements of the system were defined based on the interRAI assessment system, a set of comprehensive and standardized geriatric assessment tools for institutional and home settings. RADIO analysed the machine perception state of the art in order to establish which interRAI items can be automatically recognized reliably enough to be useful and what sensor data is needed for these perception technologies. Besides technical feasibility and privacy concerns with respect to the sensor data needed, RADIO carried out a more general discussion on obtrusiveness and how it balances with clinical monitoring requirements [D2.7].