I. Introduction
Ambient assisted living (AAL) technologies are primarily developed to provide high-quality health care to ageing populations at an affordable cost. Smart homes are one of the main targets for these technologies because around 90% of elderly people prefer staying at home, meaning they spend more time in their homes than younger people [1] A smart home is defined as “a residential setting equipped with a set of advanced electronics, sensors and automated devices specifically designed for care delivery, remote monitoring, early detection of problems or emergency cases and promotion of residential safety and quality of life” [2], [3]. Different types of sensors, such as cameras, microphones, motion sensors, passive infrared motion sensors, radio frequency identification sensors, smart tiles, magnetic switches etc., are deployed in such homes, and information collected from these sensors is analyzed to monitor the health of residents and provide them increased comfort [4].