Abstract. Decline in daily functioning usually involves the reduction and discontinuity in daily routines; entailing a considerable decrease of the quality of life (QoL). This is especially relevant for people that need assistance, as for instance elderly or disabled people and may also hide pathological (e.g., Alzheimer) and/or mental (e.g., depression or melancholia) conditions. Thus, there is the need to intelligent systems able to monitor users’ activities to detect emergencies, recognize activities, send notifications, and provide a summary of all the relevant information. In this paper, we present a sensor-based telemonitoring system that addresses all that issues. Its goal is twofold: (i) helping and supporting people (e.g., elderly or disabled) at home; and (ii) giving a feedback to therapists, caregivers, and relatives about the evolution of the status, behavior and habits of each monitored user. Some features of the system have been evaluated with two healthusers in Barcel...