Abstract: The present disclosure refers to a method for manufacturing a secured window in an identification card. The method comprising embedding information in a transparent window of the identification card and covering the embedded information with a thermochromic layer on a first side of the transparent window. The thermochromic layer is configured to become substantially transparent when subjected to a level of heat greater than a determined threshold value. In addition the method comprises the step of covering a second side of the transparent window, opposite to the first side, with a further thermochromic layer, the further thermographic layer being configured to become substantially transparent when subjected to a level of heat greater than the determined threshold value, such that the embedded information becomes visible through the transparent window when both sides of the window are exposed to the level of heat greater than the determined threshold value.

Abstract: The present disclosure refers to a method for manufacturing a secured window in an identification card. The method comprising embedding information in a transparent window of the identification card and covering the embedded information with a thermochromic layer on a first side of the transparent window. The thermochromic layer is configured to become substantially transparent when subjected to a level of heat greater than a determined threshold value. In addition the method comprises the step of covering a second side of the transparent window, opposite to the first side, with a further thermochromic layer, the further thermographic layer being configured to become substantially transparent when subjected to a level of heat greater than the determined threshold value, such that the embedded information becomes visible through the transparent window when both sides of the window are exposed to the level of heat greater than the determined threshold value.

Abstract: The method comprises a pre-lamination step wherein a layer is placed in contact at least on one side with a lamination plate having a recess and the layer undergoes lamination such that a raised portion is formed on the layer; an assembling step wherein another layer is placed in contact with the layer, and the raised portion of the layer is at least partially placed in an opening of the other layer and a lamination step wherein said layers are laminated together.