Abstract: An information delivery system according to an embodiment of the invention is configured with a communication terminal and a server. The communication terminal includes a camera capable of taking an image of a barcode storing an identifier, an analyzer analyzing image data of the barcode taken by the camera to acquire the identifier, and a transmitter transmitting the identifier acquired by the analyzer. The server includes storage storing information in association with identifiers, a receiver receiving the identifier transmitted from the communication terminal, and a transmitter transmitting the information corresponding to the identifier retrieved from the storage to the communication terminal.