Abstract: An apparatus to monitor for hypoglycaemia in a human, the apparatus including: two or more sensors to concurrently measure two or more physical properties over time, the physical properties including one or more temperatures and/or one or more movements of an arm and/or a hand of the human; and an electronic system configured to: receive signals representative of the measured physical properties; and process the received signals to generate an output indicative of hypoglycaemia in the human.