Abstract: The method (100) for securing an object comprises: a step of encoding a first message (301) in a two-dimensional barcode (303), the first message comprising at least a header identifying a certification resource and a signature produced by means of this resource; a step of generating a fragile anti-copy mark (304) encoding a second message (302) representative of the signature produced, the second message comprising redundancies; and a step of marking the object with the first 2D barcode and the fragile anti-copy mark.

Abstract: A method (30) for securing a document, which comprises: a step (301) of statistically determining the average magnitude of an unpredictable print variation; a step (302) of generating a message representative of at least one predefined print variation rate; a step (307) of encoding the message in a 2D barcode comprising a plurality of cells, the cells comprising two areas: a first area representing a symbol and a second area, representing a matrix of dots of dimensions smaller than the dimensions of the second area and having at least one geometric characteristic similar to the amplitude of the statistically determined unpredictable print variation; and a step (310) of printing the document with the barcode, the print causing the unpredictable variation.

Abstract: The method (10) for the remote signature and certification of a person's identification data, comprises: by a communicating mobile terminal: a step (12, 14) of reading a machine-readable zone, in an official document, a zone reserved for the reading, identification and validation of this document, a step (16) of reading, in a memory of this official document, a photograph and a signature of said photograph, and a step (20, 22) of transmitting the photograph and the signature of the photograph to a remote server; and by the remote server: a step (26) of calculating a facial recognition template from the photograph.

Abstract: A method for securely marking an object, comprising: a step of determining a maximum cell size (302) of a two-dimensional barcode (301), the cell size being defined by an area containing a number of dots (304, 305), a step of estimating a minimum number of dots of a predetermined colour referred to as the “main colour” in a cell such that the cell is detected as being said colour by a predetermined reader, a step of encoding a message in cells of a two-dimensional barcode by defining the main colour of each cell, said message representing at least one instance of access to a remote resource, for at least one cell, a step of defining an image (306) to be represented in the cell, the number of dots in the colour image defining the cell being greater than the estimated minimum number and a step of marking the object with the secure two-dimensional barcode.

Abstract: The device (100) for protecting a document (125) comprises: —a means (120) for inputting a digital file representing an image of at least a part of the document, —a means (135) of extracting characteristic elements of the image and of positions of said characteristic elements on the document, —a means (140) of encoding characteristic elements of the image and data representative of position of said characteristic elements on the document, and to a matrix code and—a means (155) of printing the matrix code on or in said document. In embodiments, the device comprises: —a means (165) of determining a location of the document not bearing any information, and/or—a means (165) of determining the shape of the matrix code corresponding to the location of the document not bearing information, the printing means printing the matrix code at the determined location and according to the determined shape.

Abstract: A method of integrating a mark in a document. A frame to be printed is selected. At least one color of the selected frame is selected. A color density for each selected color for the selected frame is determined. A digital code is selected for each selected color. After printing, the digital code includes the density of the color. and is integrated into the frame of the corresponding color. The frame including the digital code is printed. Preferably, the digital code is a digital anti-copy mark designed to form, following the printing step, a printed anti-copy mark with an error rate of more than five percent.

Abstract: A device to secure an object receives a digital file representing a photograph as an input. The photogram represents at least one portion of the object. An encoder of the device encodes characteristic elements of the photograph into a matrix code. The device further includes a printer to print the matrix code on or in the object. The photograph can represent biometric data of a person, which are also visible on the object. An image sensor can be used to input the digital file representing the photograph and is configured to take an image of the object on which the matrix code is printed.

Abstract: A method of marking a holographic matrix. The method includes forming the holographic matrix, which is designed to produce holograms by printing. At least one anti-copy mark on the holographic matrix is formed and at least one copy-robust mark on the holographic matrix is formed. At least one of the steps for forming at least one mark on the holographic matrix uses laser-structuring of the holographic matrix surface. Preferably, the anti-copy mark represents a message and a plurality of redundancies of the message carried by the anti-copy mark. Also, preferably, a picosecond laser is used to form the anti-copy mark is formed.

Abstract: A device for producing a document carrying the identification of a person/animal. A first detector to determine the printing conditions of the document. A sensor to obtain the biometric data of the person/animal. A first encoder encodes the biometric data to form a digital identification image including redundancies. A second detector to determine physical characteristics of cells of at least one shape, such that the proportion of cells printed with a print error results from unanticipated unknowns in printing. A second encoder to form, within the shape, an authentication image for authenticating the document and includes elementary cells representing the encoded authentication image. A printer to print the authentication and identification images on the document, and to generate random errors in the printed elementary cells of the authentication image to detect modification to the appearance of the elementary cells.

Abstract: The device (100) for protecting a document (125) comprises:—a means (120) for inputting a digital file representing an image of at least a part of the document,—a means (135) of extracting characteristic elements of the image and of positions of said characteristic elements on the document,—a means (140) of encoding characteristic elements of the image and data representative of position of said characteristic elements on the document, and to a matrix code and—a means (155) of printing the matrix code on or in said document. In embodiments, the device comprises:—a means (165) of determining a location of the document not bearing any information, and/or—a means (165) of determining the shape of the matrix code corresponding to the location of the document not bearing information, the printing means printing the matrix code at the determined location and according to the determined shape.

Abstract: A device for reading a message includes a reader to read biometric data of a holder of the medium and a scanner to capture, on a medium, an encoded message having elementary message units. The message includes a noise that consists of marking defects of the message on the medium which are random and unpredictable for each elementary message unit. A noise reducer to reduce the noise of the captured message based on biometric data. A decoder to decode at least one portion of the message in which the noise has been at least partially removed. Preferably, the decoder utilizes redundancies of the message with the noise removed to determine at least one portion of the encoded message.

Abstract: A method for authenticating a tag, includes: a step (205) of capturing an image, with a communicating mobile terminal, of at least a portion of a tag having at least a portion of an identifier; a step (210) of transmitting the identifier to a server; a step (215) of reading, from a memory of tag images, the image of a tag having the identifier; a step (220) of transmitting, to the communicating mobile terminal, at least a portion of the image read from the memory; and a step (230) of displaying at least a portion of the transmitted image superimposed on an image captured by the terminal.

Abstract: A method of marking a holographic matrix. The method includes forming the holographic matrix, which is designed to produce holograms by printing. At least one anti-copy mark on the holographic matrix is formed and at least one copy-robust mark on the holographic matrix is formed. At least one of the steps for forming at least one mark on the holographic matrix uses laser-structuring of the holographic matrix surface. Preferably, the anti-copy mark represents a message and a plurality of redundancies of the message carried by the anti-copy mark. Also, preferably, a picosecond laser is used to form the anti-copy mark is formed.

Abstract: A method of integrating a mark in a document. A frame to be printed is selected. At least one color of the selected frame is selected. A color density for each selected color for the selected frame is determined. A digital code is selected for each selected color. After printing, the digital code includes the density of the color. and is integrated into the frame of the corresponding color. The frame including the digital code is printed. Preferably, the digital code is a digital anti-copy mark designed to form, following the printing step, a printed anti-copy mark with an error rate of more than five per cent.

Abstract: A device to secure an object receives a digital file representing a photograph as an input. The photogram represents at least one portion of the object. An encoder of the device encodes characteristic elements of the photograph into a matrix code. The device further includes a printer to print the matrix code on or in the object. The photograph can represent biometric data of a person, which are also visible on the object. An image sensor can be used to input the digital file representing the photograph and is configured to take an image of the object on which the matrix code is printed.

Abstract: A device for reading a message includes a reader to read biometric data of a holder of the medium and a scanner to capture, on a medium, an encoded message having elementary message units. The message includes a noise that consists of marking defects of the message on the medium which are random and unpredictable for each elementary message unit. A noise reducer to reduce the noise of the captured message based on biometric data. A decoder to decode at least one portion of the message in which the noise has been at least partially removed. Preferably, the decoder utilizes redundancies of the message with the noise removed to determine at least one portion of the encoded message.

Abstract: A device for producing a document carrying the identification of a person/animal. A first detector to determine the printing conditions of the document. A sensor to obtain the biometric data of the person/animal. A first encoder encodes the biometric data to form a digital identification image including redundancies. A second detector to determine physical characteristics of cells of at least one shape, such that the proportion of cells printed with a print error results from unanticipated unknowns in printing. A second encoder to form, within the shape, an authentication image for authenticating the document and includes elementary cells representing the encoded authentication image. A printer to print the authentication and identification images on the document, and to generate random errors in the printed elementary cells of the authentication image to detect modification to the appearance of the elementary cells.

Abstract: A method for reading a physical characteristic on an object includes: a step (240, 315, 405) of capturing a first image of at least a portion of the object with a first resolution; a step (245, 320, 415, 420) of determining the position of an area of the object to be processed, according to the first image; a step (255, 330, 430) of capturing a second image of the area of the object to be processed, with a second resolution higher than the first resolution; and a step (260, 335, 440) of determining the physical characteristic based on the second image. In some embodiments, there is, in addition, a step of marking the object with a mark bearing information representative of at least a portion of the physical characteristic.

Abstract: A planar sheet comprising, on a first surface of the sheet, at least one printed mark, and on a second surface of the sheet, opposite the first surface, at least one invisible printed mark vertically adjacent to the mark printed on the first surface. In at least one pair of vertically adjacent marks formed on the opposite surfaces, at least one of the marks of the pair has unique content. At least one invisible mark can be a two-dimensional barcode and/or at least one invisible mark can be a copy-protection mark. The content of at least one mark can be representative of the position of an invisible mark on the sheet.

Abstract: The method for marking a product includes: a step of forming, on or in the product, a mark robust to copying, with a first resolution, a step of forming, on or in the product, a mark sensitive to copying, with a second resolution higher than the first resolution, a step of capturing an image of the robust mark, the sensitive mark and another part of the product and a step of memorizing an item of information representing the image of the robust mark, the sensitive mark and the other image part. In embodiments, during at least one forming step, the position of the mark formed during this forming step is random in relation to the other image part.