Fecha de publicación: 04/07/2019 Fuente: Wipo "IOT" [Problem] To increase the probability of acquisition of desired data from an IoT device during emergency. [Solution] This IoT device control method comprises: receiving external information; on the basis of the received external information, selecting an IoT device from a first IoT device that transmits data during normal time and a second IoT device different from the first IoT device; and instructing the selected IoT device to transmit data.