Provided is a server, wherein an image group and a terminal ID are received from an imaging terminal, a first ID specifying a first image among the image group, the terminal ID, and the first image are stored in a first storage, a second ID specifying a second image among the image group, the terminal ID, and the second image are stored in a first storage, a user ID and a terminal ID are received from an data terminal, the user ID and the terminal ID are stored in a second storage, the terminal ID is extracted by conducting a search thereof inside the second memory using the user ID as the key, the first image and the second image are extracted as a result of conducting a search thereof inside the first storage using the terminal ID as the key, a first summary image is stored in association with the terminal ID and the first ID in a third storage, a second summarized image is stored in association with the terminal ID and the second ID in the third storage, and the first summary image and the second summary image are sent to the data terminal.