Abstract: A score calculating device includes: an isolation-score calculating unit configured to calculate, based on a history of position information of a plurality of subjects belonging to a predetermined group, an isolation score indicating a degree of isolation from a group for each of the subjects; a tendency-score calculating unit configured to calculate a tendency score indicating a tendency of each subject regarding interaction with others; and a communication-score calculating unit configured to calculate a communication score indicating a degree of communication with others in the group for each of the subjects during a target period based on the isolation score and the tendency score.

Abstract: A light emission control device includes a detection unit configured to detect a user around a display device; a disinfection light source controller configured to control a disinfection light source unit of a wavelength having a disinfecting effect; a light source controller configured to control a light source unit of a wavelength different from the wavelength having the disinfecting effect; and a determination unit configured to determine, based on a detection result by the detection unit, whether no user is around the display device, wherein in a case in which the determination unit determines that no user is around the display device, the light source controller is further configured to control the light source unit to stop emitting light therefrom, and the disinfection light source controller is further configured to control the disinfection light source unit to start emitting light therefrom.