A method for making an object secure comprises creating a multi-layer graphic signature by superposing, in partial or total transparency, a first random graphic element on a first layer to a second graphic element on a second layer, and storing the graphic signature on or in the object. The method is essentially characterized in that the relative position of the first graphic element and of the second graphic element is random.

The present disclosure envisages a system for product authentication comprises a non-replicable security tag, at least one mobile device and a server. The security tag comprises a background print layer and a foreground print layer. The foreground print layer includes a tag identifier and a variable image pattern. The mobile device scans the security tag and 5 facilitates a first level authentication of the tag locally on the mobile device. The server is configured facilitate a second level authentication for the tag over a network.

The present invention relates to systems for product authentication. Unique identifiers are associated with products. Said identifiers are captured through a camera of the client device and transmitted to authentication server; whereupon said authentication server authenticates the products by contacting an authentication database which includes manufacturer-provided authentication information.

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.

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.

In a general aspect, orientation information is used to generate a unique code. In some aspects, orientation information is extracted from an object. The object includes multiple elements, and the orientation information indicates the relative spatial orientations of the respective elements. The orientation information can be extracted, for instance, by a scanner system that detects the elements. A unique code is generated for the object based on the orientation information. In some examples, the elements are diamond particles that each have one or more color centers, and the orientation information is extracted by detecting the color centers.

The present invention provides an invisible-feature detection device capable of easily detecting a serial number with an invisible feature at low cost, a sheet recognition device, a sheet handling device, a print inspection device, and an invisible-feature detection method.

The present invention provides an invisible-feature detection device capable of easily detecting a serial number with an invisible feature at low cost, a sheet recognition device, a sheet handling device, a print inspection device, and an invisible-feature detection method.

A system for providing document authenticity, securing, and tracing includes a mark, an invisible code and a serial number. A user desiring to create a secure, verifiable document can receive one or more codes or indicia to put on the physical document.

Embodiments provide methods and systems for providing labels to prevent counterfeiting of products. In an embodiment, the method includes accessing, by a processor, one or more biometric data associated with a manufacturer. The one or more biometric data include fingerprint data, iris pattern, facial pattern, heart rate, electrical activity of skeletal muscles and deoxyribonucleic acid (DNA) data that are encrypted using a first encryption method for generating a first encrypted data. From the first encrypted data, a biometric pattern is extracted. The biometric pattern is appended with one or more product identification codes for generating a product encoded data. The product encoded data is encrypted using a second encryption method. An error checksum data is appended to the second encrypted data and a unique identifier is prefixed to the second encrypted data. The second encrypted data is added to product labels of the products for securing the products from counterfeiting.