A method of manufacturing an individual authentication medium with an image display that is to be transferred from a support onto a substrate and displays an image including personal information, comprising: providing a transfer material layer being releasably supported by a first support, transferring a part of a transfer material layer including a hologram and/or diffraction grating from the first support onto a base layer, the base layer being releasably supported by the support, by a thermal transfer method using a thermal head so as to form a first image display layer on the base layer, the first image display layer including a part of the hologram and/or diffraction grating, displaying an image including at least a piece of the personal information, and comprising a release layer, a diffraction structure formation layer interposed between the base layer and the release layer and having a surface provided with a relief structure, and an adhesive layer interposed between the base layer and the diffraction structure formation layer, the diffraction structure formation layer including at least the hologram and/or diffraction grating as the diffraction structure, wherein the first image display layer includes dot-shaped portions, and each center of the dot-shaped portions is located on a lattice point of a virtual planar lattice; forming a second image display layer facing the base layer, the second image display layer being formed on the same side of the base layer as the first image display layer, and displaying a second image by utilizing light absorption, wherein the second image includes another piece of the personal information; the image display comprising the base layer, the first image display layer and the second image display layer; and transferring the image display from the support onto the substrate of the individual authentication medium. providing a transfer material layer being releasably supported by a first support, transferring a part of a transfer material layer including a hologram and/or diffraction grating from the first support onto a base layer, the base layer being releasably supported by the support, by a thermal transfer method using a thermal head so as to form a first image display layer on the base layer, the first image display layer including a part of the hologram and/or diffraction grating, displaying an image including at least a piece of the personal information, and comprising a release layer, a diffraction structure formation layer interposed between the base layer and the release layer and having a surface provided with a relief structure, and an adhesive layer interposed between the base layer and the diffraction structure formation layer, the diffraction structure formation layer including at least the hologram and/or diffraction grating as the diffraction structure, wherein the first image display layer includes dot-shaped portions, and each center of the dot-shaped portions is located on a lattice point of a virtual planar lattice; forming a second image display layer facing the base layer, the second image display layer being formed on the same side of the base layer as the first image display layer, and displaying a second image by utilizing light absorption, wherein the second image includes another piece of the personal information; the image display comprising the base layer, the first image display layer and the second image display layer; and transferring the image display from the support onto the substrate of the individual authentication medium.