Abstract: A method, including: receiving observation data from one or more data-capturing devices, the observation data representing a presence of an individual; processing the observation data to generate identity data representing the identity of the individual, and to detect at least one physiological characteristic or behavioural characteristic of the individual; retrieving behavioural profile data of the individual based on the identity data; and comparing the detected characteristic to at least one expected characteristic represented by the behavioural profile data of the individual to identify an abnormality of the individual.