A communication system has a communication terminal and information processing device that can be mounted on a movable body. The information processing device includes a request transmission part that transmits to a communication terminal within a predetermined range a request signal, the request signal requesting the transmission of an image, through broadcast communication for transmitting information to a plurality of transmitting partners. The request signal contains a positional information indicative of a position. The communication terminal includes: an image shooting part that shoots an image around the communication terminal; a position acquisition part that obtains a position at which the image is shot; a recording part that associates and records the shot image and the position; and a receiving part that receives the request signal; and an image transmission part that transmits an image.