Information processing device

An information processing device comprising a controller configured to:

• acquire a detected value of a sensor that detects presence or absence of a person within a predetermined range outside one or more openings that is formed in a wall surface of a first building, each of the one or more openings using light control glass and the wall surface facing outside;
• determine whether or not the presence of a person within the predetermined range outside is detected for at least a first opening among the one or more openings based on the detected value of the sensor;
• determine whether or not a first condition is satisfied in a case where the presence of a person within the predetermined range outside is detected;
• control transmittance of first light control glass used in the first opening such that the first light control glass is placed in a transparent state in a case where the first condition is satisfied;
• and
• control the transmittance of the first light control glass such that the first light control glass is placed in a semi-transparent or opaque state in a case where the first condition is not satisfied;
• and wherein
• the first condition is that outside of the first building is brighter than inside of the first building and
• the controller
• acquires brightness values detected by light sensors installed inside and outside of the first building and
• determines that the outside of the first building is brighter than the inside of the first building in a case where brightness value of the outside of the first building is greater than brightness value of the inside of the first building by a predetermined value or more.