Abstract: It describes an article and method for creating a optical effect of moving images, which is produced when the angle of light reflection is changed on surfaces with embossed structures, characterized by: a) providing a metallic substrate with brightness (10); b) embossing on the substrate (10) surface (15) at least a first profile (20) and a second profile (30), which includes at least two reliefs (22, 24, 26), (32, 34, 36) being said second profile (30) adjacent to the first profile (20) and spaced apart from each other at a predetermined distance (40); c) obtaining an image by light reflection produced in the reliefs of the profiles (20 and 30) at an angle of reflection “?1” which results in a visual view of a first relative distance “X1” between the profiles (20 and 30); d) obtaining a reflection image produced in the reliefs of the profiles (20 and 30) at an angle of reflection “?2”, resulting in the visual view of a second relative distance “X2” between the profiles (20 and 30), wherein the movement of th

Abstract: Methods for certifying a security document comprising the steps of: a) selecting a set of unique characteristics, obtained as the result of the variations in the manufacturing process and supplies, b) getting a digital image of a security document and obtaining data of the relative position between features selected from different manufacturing processes (register), c) constructing a message by measuring the register of selected features from the document and the document ID data, d) constructing a hashed message, the hashed message being the message obtained after being encoded by means of a unidirectional cryptographic hash function, e) encrypting the hashed message using a public key cryptographic system to obtain a digital certificate by means of a private key, and f) storing the digital certificate in an external database.

Abstract: Methods for certifying a security document comprising the steps of: a) selecting a set of unique characteristics, obtained as the result of the variations in the manufacturing process and supplies, b) getting a digital image of a security document and obtaining data of the relative position between features selected from different manufacturing processes (register), c) constructing a message by measuring the register of selected features from the document and the document ID data, d) constructing a hashed message, the hashed message being the message obtained after being encoded by means of a unidirectional cryptographic hash function, e) encrypting the hashed message using a public key cryptographic system to obtain a digital certificate by means of a private key, and f) storing the digital certificate in an external database.