Generating a uniquely authentic copy of information uses a physical device that consistently produces unpredictable outputs based on inputs and the microstructure of the device. The device is verified to satisfy a given property. It is substantially difficult to manufacture another device that satisfies the given property and that produces a particular output in response to a particular input. Generating the uniquely authentic copy of information includes causing the device to be provided with a specific input to produce a specific output, causing the generation of a digital signature of the response and the information, and causing at least the device and the digital signature to be made available. Generating the uniquely authentic copy of information may also include making available the information, the specific input, and/or the specific output. The information may be a value of a banknote. The digital signature may be produced on behalf of an issuer.

PROCEDURE FOR THE INDIVIDUAL TRACEABILITY OF DENTAL IMPLANT PARTS AND UNITARY IDENTIFICATION SYSTEM FOR IMPLEMENTING THIS PROCEDURE that comprises: the association of each part (1), which is manufactured with a single identification code (2); the incorporation of that code (2) into the individual packaging (3) in which the part (1) is distributed and marketed, recorded on a radio frequency label (5) and/or printed on an adhesive label (6); and the implementation of specific management software in a website (4) on the Internet that associated the code (2) with traceability information of each specific part (1), associates implants with accessories and provides a user with access to it in that website (4). The unitary identification system consists of a code (2) that is unique and different for each part (1), which is a numerical code, and the specific management software that associates each code (2) with the traceability information of each part (1).

A method for authenticating a closure assembly of a container including a closure and an over pack covering at least the closure. The overpack including a first radio frequency identification tag having a first unique identifier, the method includes reading the first unique identifier the closure including a second radio frequency identification tag including a second unique identifier and a storage unit including at least data relating to an overpack/closure pair including the unique identifiers of a closure and an overpack associated with the closure reading the first unique identifier and comparing the identifiers of the overpack and of the closure thus read to verify that the pair being authenticated does coincide with the pair defined in the data assembly, emitting a communication signal corresponding to the result of the verification, the closure assembly including means for destroying at least one of the identification tags when the container is opened.

Provided are an information recording object and a reading device devised so that embedded information is difficult to guess. The information recording object 30 provided with a combined image comprising an image C1 printed in a lustrous layer 31 and an image C2 formed on the image C1 and printed in a transparent layer 32 is characterized in that: the image C1 and the image C2 are each printed with an ink for which the amount of reflected light differs according to viewing angle; for the combined image, one image is visible depending on the viewing angle; the image C2 is an image in which there is a regularity in feature points in a spatial frequency domain F2; and the image C1 is an image in which the feature points in a spatial frequency domain F1 are disposed at positions that block said regularity.

Provided are an information recording object and a reading device devised so that embedded information is difficult to guess. The information recording object 30 provided with a combined image comprising an image C1 printed in a lustrous layer 31 and an image C2 formed on the image C1 and printed in a transparent layer 32 is characterized in that: the image C1 and the image C2 are each printed with an ink for which the amount of reflected light differs according to viewing angle; for the combined image, one image is visible depending on the viewing angle; the image C2 is an image in which there is a regularity in feature points in a spatial frequency domain F2; and the image C1 is an image in which the feature points in a spatial frequency domain F1 are disposed at positions that block said regularity.

A method for inserting information into a 3D structure and recognizing information in a non-destructive method is provided. A 3D printing method according to an exemplary embodiment of the present invention includes: generating a tag having specific information recorded thereon to be inserted into a 3D structure, and printing the tag on the inside of the 3D structure while printing the 3D structure. Accordingly, since the tag having information recorded thereon is printed on the inside of the 3D structure when the 3D structure is printed by a 3D printer, it is impossible to forge/falsify information.

A method for inserting information into a 3D structure and recognizing information in a non-destructive method is provided. A 3D printing method according to an exemplary embodiment of the present invention includes: generating a tag having specific information recorded thereon to be inserted into a 3D structure, and printing the tag on the inside of the 3D structure while printing the 3D structure. Accordingly, since the tag having information recorded thereon is printed on the inside of the 3D structure when the 3D structure is printed by a 3D printer, it is impossible to forge/falsify information.

A gate system control device is a gate system control device configured to control a gate system having an exit gate, and includes a first sensor, a second sensor, and a controller. The first sensor senses that a passport of a person who is in the gate system is placed on a placement region. The second sensor senses that the person is moving. The controller controls the gate system. When the first sensor senses that the passport is placed on the placement region and the second sensor senses that the person is moving to the exit gate, the controller causes the gate system to execute processing for notifying the person.

An MR sensor structured to detect whether or not magnetic data are recorded in a magnetic stripe of a card having first and second tracks may include a first resistor and a second resistor serially-connected with each other and disposed at positions where the first track is passed; and a third resistor and a fourth resistor serially-connected with each other and disposed at positions where the second track is passed. The second resistor and the fourth resistor may be connected with a power supply, and the first resistor and the third resistor may be ground grounded. A potential difference between a first midpoint between the first resistor and the second resistor and a second midpoint between the third resistor and the fourth resistor may be an output of the MR sensor.

An electronic certificate and a display method therefor are disclosed. The electronic certificate includes an electronic certificate body, a display screen and an IC. The display screen is disposed on the front side of the electronic certificate body and is used for displaying project information of the electronic certificate. When the display screen is in a locked state, the display screen does not display any project information. The IC is connected to the display screen and is used for controlling a display function of the display screen.