A datapage of a security document includes a non-planar end face that is to be connected to a hinge material, thereby providing for increased overall contact surface area between hinge material and the datapage. Consequently, a respective connecting portion including such an interdigitated structure may provide for superior robustness while still ensuring a high degree of integrity of the datapage and a robust mechanical connection to the remainder of the security document.

A datapage of a security document includes a non-planar end face that is to be connected to a hinge material, thereby providing for increased overall contact surface area between hinge material and the datapage. Consequently, a respective connecting portion including such an interdigitated structure may provide for superior robustness while still ensuring a high degree of integrity of the datapage and a robust mechanical connection to the remainder of the security document.

An anti-counterfeiting assembly includes a fixing member, a first connecting member, a second connecting member, an anti-counterfeiting member and a cover. The first connecting member fixed to the fixing member, the first connecting member defining a first receiving groove. The second connecting member movably connected to the first connecting member, the first connecting member is arranged between the fixing member and the second connecting member, the second connecting member defining a second receiving groove communicating with the first receiving groove. The anti-counterfeiting member includes an electronic screen and a battery arranged on the electronic screen, the battery disposed in the first receiving groove, the electronic screen disposed in the second receiving groove. The cover wrapping the first connecting member and the second connecting member, the second connecting member is adapted to move along a first direction away from the fixing member.

An anti-counterfeiting assembly includes a fixing member, a first connecting member, a second connecting member, an anti-counterfeiting member and a cover. The first connecting member fixed to the fixing member, the first connecting member defining a first receiving groove. The second connecting member movably connected to the first connecting member, the first connecting member is arranged between the fixing member and the second connecting member, the second connecting member defining a second receiving groove communicating with the first receiving groove. The anti-counterfeiting member includes an electronic screen and a battery arranged on the electronic screen, the battery disposed in the first receiving groove, the electronic screen disposed in the second receiving groove. The cover wrapping the first connecting member and the second connecting member, the second connecting member is adapted to move along a first direction away from the fixing member.

Security documents often incorporate security devices to prevent or hinder counterfeiters. Disclosed herein are security devices that include a fluid or fluids within the devices. Such devices, and security documents that include them, afford new techniques to check whether a security document is a legitimate or counterfeit copy.

Security documents often incorporate security devices to prevent or hinder counterfeiters. Disclosed herein are security devices that include a fluid or fluids within the devices. Such devices, and security documents that include them, afford new techniques to check whether a security document is a legitimate or counterfeit copy.

A topcoat layer that has a defined surface structure on an outer surface thereof once the topcoat layer is laminated to a substrate. The surface structure of the topcoat layer provides a matte surface finish to the underlying substrate. Any attempt to alter the substrate or the topcoat layer will result in disruption or destruction of the surface structure of the topcoat layer making such tampering evident. Replication of the surface structure of the topcoat layer by a counterfeiter is also difficult without the appropriate equipment.

A topcoat layer that has a defined surface structure on an outer surface thereof once the topcoat layer is laminated to a substrate. The surface structure of the topcoat layer provides a matte surface finish to the underlying substrate. Any attempt to alter the substrate or the topcoat layer will result in disruption or destruction of the surface structure of the topcoat layer making such tampering evident. Replication of the surface structure of the topcoat layer by a counterfeiter is also difficult without the appropriate equipment.

A security device and a method for verifying such a security device are disclosed. The security device has at least two security features. At least one of the security features is a tamper-evident security feature, which is configured to alter irreversibly upon mechanical tampering with the security device. At least one other of the security features is a robust security feature, which is robust against tampering with the security device. The at least two security features can be extracted from at least one image of the security device with a programmable device having a camera at least in an intact state of the security device.

A method of marking an article for authentication, the comprising the steps of applying an identification mark to an article, said mark comprising an array of varying sized markings, where the combination of the shape, the spatial distribution and the varying sizes of the markings imparts a distinctiveness to the identification mark recording the identification mark in a database and associating information relating to the article with the identification mark in the database, wherein comparison of the identification mark on the article and the database enables the identification mark to be associated with the information relating to the article on the database.