A multi-spectral artificial target device for producing a deceptive thermal and radar signature of an object, comprising a multi-layer structure which comprises: - a substrate; - a functional thermal signal layer, which is provided directly or indirectly on the substrate and which comprises electrically conductive material arranged to form an array of independently controlled thermal elements, wherein each thermal element is configured to output a thermal signal, which is observable in the infra-red spectrum, upon exposure to a control voltage, and - a functional radar signal layer which is provided directly or indirectly onto the substrate, which radar signal layer is configured to output a radar response signal, which is observable in the radio frequency spectrum, upon exposure to an external radar stimulus or excitation, wherein - the thermal signal layer is patterned to include electrically resistive elements or comprises additional electrically resistive elements between sections of the electrically conductive material to provide for the array of thermal elements in the functional thermal signal layer, - each thermal element on the thermal signal layer comprises a first electrode and a second electrode, - the first electrode and the second electrode are connected by the electrically resistive element, - the multi-layer structure comprises a driving layer, which is provided directly or indirectly on a side of the substrate opposing the thermal signal layer, which driving layer comprises an electrically conductive lead, - the multi-layer structure comprises a conductor, which extends through the substrate and provides an electrical connection between the lead and the thermal signal layer, and - the conductor comprises a plurality of electrically conductive channels extending through the substrate such patterned to provide for the array of thermal elements or electrically conductive material embedded into the substrate material. - a substrate; - a functional thermal signal layer, which is provided directly or indirectly on the substrate and which comprises electrically conductive material arranged to form an array of independently controlled thermal elements, wherein each thermal element is configured to output a thermal signal, which is observable in the infra-red spectrum, upon exposure to a control voltage, and - a functional radar signal layer which is provided directly or indirectly onto the substrate, which radar signal layer is configured to output a radar response signal, which is observable in the radio frequency spectrum, upon exposure to an external radar stimulus or excitation, - the thermal signal layer is patterned to include electrically resistive elements or comprises additional electrically resistive elements between sections of the electrically conductive material to provide for the array of thermal elements in the functional thermal signal layer, - each thermal element on the thermal signal layer comprises a first electrode and a second electrode, - the first electrode and the second electrode are connected by the electrically resistive element, - the multi-layer structure comprises a driving layer, which is provided directly or indirectly on a side of the substrate opposing the thermal signal layer, which driving layer comprises an electrically conductive lead, - the multi-layer structure comprises a conductor, which extends through the substrate and provides an electrical connection between the lead and the thermal signal layer, and - the conductor comprises a plurality of electrically conductive channels extending through the substrate such patterned to provide for the array of thermal elements or electrically conductive material embedded into the substrate material.