An identification card authenticity determining method based on deep learning according to the disclosure for automatically checking authenticity of an identification card includes: inputting identification card data to a feature information extraction model to extract pieces of feature information, expressing an indicator for checking authenticity of the identification card, from the identification card data; inputting the extracted pieces of feature information to a classification model to determine authenticity of the identification card; and when it is determined that the identification card is falsified, extracting a class activation map, where a falsification region of the identification card data is activated, from the pieces of feature information.

A visual security feature is provided that is disposed on a target. The visual security feature includes two substantially transparent layers. At least one of the two substantially transparent layers is present in an image-wise pattern.

A wearable device includes a wireless receiver, a processor, a memory component, and a graphical display. The wireless receiver is configured to be in wireless signal communication with a remote user device so that the wireless receiver can receive a programming signal from the remote user device. The memory component stores non-transitory computer-executable instructions that, when executed by the processor, cause the wearable device to display one or more graphics at the graphical display. Upon receiving the programming signal from the remote user device, the processor can execute the non-transitory computer-executable instructions to cause the processor to generate an interface input signal based on the received programming signal and convey the interface input signal to the graphical display to cause the graphical display to display one or more graphics corresponding to the interface input, and thus corresponding to the programming signal.

A wearable device includes a wireless receiver, a processor, a memory component, and a graphical display. The wireless receiver is configured to be in wireless signal communication with a remote user device so that the wireless receiver can receive a programming signal from the remote user device. The memory component stores non-transitory computer-executable instructions that, when executed by the processor, cause the wearable device to display one or more graphics at the graphical display. Upon receiving the programming signal from the remote user device, the processor can execute the non-transitory computer-executable instructions to cause the processor to generate an interface input signal based on the received programming signal and convey the interface input signal to the graphical display to cause the graphical display to display one or more graphics corresponding to the interface input, and thus corresponding to the programming signal.

This patent document discloses physical documents including metameric ink pairs. One claim recites a document comprising: a first surface; a second surface, in which the first surface comprises a first set of print structures and a second set of print structures, in which the first set of print structures and the second set of print structures collective convey an encoded signal discernable from optical scan data representing at least a first portion of the first surface, in which the first set of print structures is provided on the first surface with a first ink and the second set of print structures is provided on the first surface with a second, different ink, and in which the first ink and the second, different ink comprise a metameric pair. Of course, other claims and combinations are described as well.

This patent document discloses physical documents including metameric ink pairs. One claim recites a document comprising: a first surface; a second surface, in which the first surface comprises a first set of print structures and a second set of print structures, in which the first set of print structures and the second set of print structures collective convey an encoded signal discernable from optical scan data representing at least a first portion of the first surface, in which the first set of print structures is provided on the first surface with a first ink and the second set of print structures is provided on the first surface with a second, different ink, and in which the first ink and the second, different ink comprise a metameric pair. Of course, other claims and combinations are described as well.

Example embodiments of information-shielding cards and systems and methods of fabricating the same are provided. An information-shielding card can comprising a substrate comprising a first layer, a second layer, a third layer, a chip embedded in the second layer, and a quick-response (QR) code formed on the second layer. The second layer can be disposed between the first layer and the third layer. The first layer can comprise a first material that is transparent when exposed to a non-visible light, the second layer can comprise a second material that is opaque when exposed to visible light and when exposed to non-visible light, and the third layer comprises a third material that is transparent when exposed to a non-visible light.

A platelet-shaped magnetic effect pigment is provided for use in a printing ink, and includes a layer construction with a magnetic layer and at least one optical functional layer, such that the magnetic layer is based on a magnetic material having a column-shaped nanostructure and the magnetic columns respectively have a largely uniform preferential magnetic direction deviating from the platelet plane.

A micro-optic device, including: a substrate; a plurality of image elements; and a plurality of focusing elements, each focusing element focuses light towards, or causes light to be diverged from or constructively interfere at a real or imaginary focal point, the focusing elements causing the image elements to be sampled so as to project imagery which is observable to a user from at least a first viewing angle, wherein a first focusing structure including at least a first group of the focusing elements and a first imagery structure including at least a first group of the image elements are integrated into a first unitary structure on a first side of the substrate.

A security device includes a diffractive structure, including grating elements and having a first area, the grating elements within a region have a constant pitch or spacing; the first area regions pitches or spacings increase from one region to the next between a first region having a grating element pitch or spacing of less than or equal to 0.6 microns and an end region having a grating element pitch or spacing of greater than or equal to 5 microns; upon illumination and viewing along a first viewing direction substantially orthogonal to the first axis, the device exhibits a first optical effect in that at least one region exhibits a diffractive colour; each region has at least first and second sub-regions having different grating element orientations within the plane of the device such that the first optical effect is exhibited at more than one angle of tilt about the second axis.