The present disclosure relates to an information processing device and method and a recording medium with which it is possible to simply acquire a wide range of people flow data. A mobile entity control unit causing control data for controlling a user's setting information from an input unit or a mobile entity to be transmitted by a communication unit. A display control unit generating display data that corresponds to the people flow data of a people flow data database and outputting the generated display data to a display unit. A communication unit transmitting control data, measurement area information, and landing area information to the mobile entity, receiving people flow data from the mobile entity, and supplying same to a control unit. The input unit sets setting information relating to people flow data measurement in response to a user's operation. The display unit performs display that corresponds to the display data generated by the display control unit. The present disclosure can be applied to, for example, a people flow measurement system comprising a mobile entity and a terminal.