Example embodiments of biodegradable cards and systems and methods making the same are provided. A biodegradable card can comprise a biodegradable substrate, a magnetic particle slot within the biodegradable substrate configured to receive magnetic particles, a high coercivity magnetic stripe comprising magnetic particles printed on the biodegradable substrate and encoded with payment account data, and a biodegradable water resistant coating, wherein the coating covers at least the magnetic stripe.

A method of forming a security device includes selectively providing a high refractive index (HRI) layer to a first outwardly facing surface of a security device substrate, the HRI layer having a substantially transparent host material and particles having a dimension along at least one axis less than 200 nm, such that they are substantially non-scattering to visible light and the HRI layer is substantially transparent to visible light, and wherein; the particles have a refractive index of at least 1.8 and are present within the host material in a proportion such that the resultant refractive index of the HRI layer is at least 1.6. A corresponding security device, as well as security articles and security documents, are also disclosed.

A security element is applied to a document or an object in the form of a directly printed marking or in the form of a tag made of paper or another material, with or without an identifier. A user can take a picture of the marking or tag with a smartphone and then send the picture to a device including software provided with a recognition algorithm including neural networks. The device visualizes the fingerprint of the tag or marking, thus making it possible to ascertain the authenticity of the document or object. In order to establish the authenticity of the product protected by the device, the image, stored in a cloud or blockchain database, of the tag obtained after printing same or of the marking is compared with a new description.

A security element is applied to a document or an object in the form of a directly printed marking or in the form of a tag made of paper or another material, with or without an identifier. A user can take a picture of the marking or tag with a smartphone and then send the picture to a device including software provided with a recognition algorithm including neural networks. The device visualizes the fingerprint of the tag or marking, thus making it possible to ascertain the authenticity of the document or object. In order to establish the authenticity of the product protected by the device, the image, stored in a cloud or blockchain database, of the tag obtained after printing same or of the marking is compared with a new description.

Disclosed is an optical film of a double-sided structure, comprising: a body which comprises a polymer, having a first surface and a second surface opposite to each other; an accommodation mechanism provided on the first surface and the second surface; and a filler filled in the accommodation mechanism for forming a graphic structure, wherein the upper surface of the filler is just flush with the first surface and the second surface respectively to form a plane structure; or, the upper surface of the filler is lower than the first surface and the second surface respectively to form a sag structure; the body comprising the accommodation mechanism is an integral structure; the polymer comprises a thermosetting resin, a photocurable resin or a mixture of the thermosetting resin and the photocurable resin. The present application provides the optical film, so as to advantageously reduce a thickness of a film.

A method and system of making a secure financial card with dynamic viewing angles is provided. The secure financial card includes a first surface and a second surface opposite the first surface. The financial card includes at least a first portion of indicia and a second portion of the indicia indicative of the card information. The first portion of the indicia and the second portion of the indicia are configured with respective viewing angles and printed on one of the first surface and the second surface. The financial card includes a slide device moveable to different positions associated with different portions of indicia. The slide device allows the respective portion of the indicia to be viewable from different viewing angles. An account number of the financial card is read by rotating the financial card and full card information is unable to be captured by an image of the financial card.

A method and system of making a secure financial card with dynamic viewing angles is provided. The secure financial card includes a first surface and a second surface opposite the first surface. The financial card includes at least a first portion of indicia and a second portion of the indicia indicative of the card information. The first portion of the indicia and the second portion of the indicia are configured with respective viewing angles and printed on one of the first surface and the second surface. The financial card includes a slide device moveable to different positions associated with different portions of indicia. The slide device allows the respective portion of the indicia to be viewable from different viewing angles. An account number of the financial card is read by rotating the financial card and full card information is unable to be captured by an image of the financial card.

In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.

In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.

The present invention relates to a layer structure, preferably a hinge, particularly preferably a book cover, very particularly preferably a book cover for identification and security documents, comprising at least one outer layer a) containing at least one thermoplastic elastomer, preferably a thermoplastic polyurethane, and at least one layer b) containing at least one material selected from the group consisting of a polymer, a metal, a textile, a paper and a synthetic paper, or a combination of at least two of these, and also relates to a laminate comprising the above layer structure and to the method for producing same. The invention further relates to the use of the layer structure and/or laminate for the production of a hinge, preferably a multilayer book cover, especially for security and identification documents.