In general, the subject matter described in this specification relates to security credentials for documents, such as identification documents. One example is an identification document that includes a photographic image of an individual associated with the document, and a spiral pattern applied to a region of the identification document. The spiral pattern includes an elliptical spiral segmented into a plurality of arc segments, where wherein the arc segments of the spiral pattern encode identification data associated with the individual. Other implementations include corresponding processes, systems, apparatus, and computer programs related to generating and verifying identification documents with spiral patterns.

A sensor unit utilized in an autonomous driving vehicle (ADV) includes a unit tray containing a sensor interface, a host interface, and one or more sensor processing modules. The sensor interface can be coupled to a variety of sensors used in the ADV, such as, for example, LIDAR, RADAR, cameras, etc., which may be mounted on different locations of the ADV. The host interface can be coupled a host system that is responsible for autonomously driving the vehicle. The host system is configured to perceive a driving environment surrounding the ADV base on sensor data obtained from the sensors and plan a path to autonomously drive the vehicle through the driving environment. The sensor processing modules are configured to process the sensor data obtained from the sensors.

A method of manufacturing a hybrid security structure for a security document, the method comprising the steps of: providing a document substrate; applying to the document substrate, by a first process, a first element comprising a first electrically conductive region of the hybrid security structure; applying to the document substrate, by a second process, a second element comprising a second electrically conductive region of the hybrid security structure, wherein the first process is different from the second process; and electrically coupling the first and second electrically conductive regions of the hybrid security structure for detection by a capacitance sensor.

A method of manufacturing a hybrid security structure for a security document, the method comprising the steps of: providing a document substrate; applying to the document substrate, by a first process, a first element comprising a first electrically conductive region of the hybrid security structure; applying to the document substrate, by a second process, a second element comprising a second electrically conductive region of the hybrid security structure, wherein the first process is different from the second process; and electrically coupling the first and second electrically conductive regions of the hybrid security structure for detection by a capacitance sensor.

A method for manufacturing a security document including a security pattern generation method includes the steps of selecting a bounding region, an image object, and a raster image or a function; cutting the image object into image object partitions; and repeating the image object as a pattern, preferably a lattice pattern, in the bounding region wherein each of the image object partitions of an image object is transformed depending on the position area of the image object in the lattice pattern and the rank of the image object partition.

A method for manufacturing a security document including a security pattern generation method includes the steps of selecting a bounding region, an image object, and a raster image or a function; cutting the image object into image object partitions; and repeating the image object as a pattern, preferably a lattice pattern, in the bounding region wherein each of the image object partitions of an image object is transformed depending on the position area of the image object in the lattice pattern and the rank of the image object partition.

Provided is an information display medium that can enhance a forgery prevention effect. An information display medium (100) includes a light reflection layer (20) made of a metal or a metallic oxide and partially or fully placed on one surface of a substrate, and the light reflection layer (20) includes a first region (30) where first information is displayed by either of or a combination of an outline shape and a shape of an uneven region, and a second information display region (21a) where identification information formed by partial material removal of the light reflection layer (20), the second information display region being set to partially or fully overlap with the light reflection layer (20) where the first information is displayed in the first region (30).

Provided is an information display medium that can enhance a forgery prevention effect. An information display medium (100) includes a light reflection layer (20) made of a metal or a metallic oxide and partially or fully placed on one surface of a substrate, and the light reflection layer (20) includes a first region (30) where first information is displayed by either of or a combination of an outline shape and a shape of an uneven region, and a second information display region (21a) where identification information formed by partial material removal of the light reflection layer (20), the second information display region being set to partially or fully overlap with the light reflection layer (20) where the first information is displayed in the first region (30).

A method for manufacturing a security document including a security pattern generation method includes the steps of selecting a bounding region, an image object, and a raster image or a function; cutting the image object into image object partitions; and repeating the image object as a pattern, preferably a lattice pattern, in the bounding region wherein each of the image object partitions of an image object is transformed depending on the position area of the image object in the lattice pattern and the rank of the image object partition.

A method for manufacturing a security document including a security pattern generation method includes the steps of selecting a bounding region, an image object, and a raster image or a function; cutting the image object into image object partitions; and repeating the image object as a pattern, preferably a lattice pattern, in the bounding region wherein each of the image object partitions of an image object is transformed depending on the position area of the image object in the lattice pattern and the rank of the image object partition.