RU2751691C1 - Method for identifying information carrier - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: invention relates to the field of identification of an information carrier made on a paper or plastic substrate, such as drawings, regulatory and technical documentation, document forms, plastic cards, passports, books and other printed products, and is aimed at preventing unauthorised reproduction or copying, moving and storage thereof. When the method is implemented, an encoding element is introduced into the information carrier, based on at least one multi-core amorphous-metal fibre with a given response to the impact from an alternating magnetic field, a sensor is installed at a preset distance from the information carrier, for contactless identification of the encoding element in the alternating magnetic field, connected to a microprocessor unit with software, assigning to the information carrier, based on the data received from the sensor, a specific type in the accepted hierarchical system wherein, depending on the type of the carrier, a set of permitted actions therewith is established, and generating a control signal to allow/prohibit performance of these actions with the information carrier.

EFFECT: invention allows identifying information carriers made on a paper or plastic substrate.

8 cl, 3 ex, 1 tbl

Description

The invention relates to the field of identification of an information carrier made on a paper or plastic substrate, such as drawings, regulatory and technical documentation, forms of documents, plastic cards, passports, books and other printed products, and is aimed at preventing their unauthorized reproduction or copying, moving and storage.

The invention describes a method for identifying an information carrier containing, on its surface, or in its composition, special hidden elements in the form of amorphous metal fibers of a given structure, intended for remote identification of information carriers with protection against unauthorized actions over the information carrier using coding elements based on amorphous metal fibers.

It is known from the prior art (RF patent application No. 2007111536, RF patent No. 2219299, RF patent No. 2298603) on the use of magnetic elements based on fibers from amorphous-metal alloys, which have the property of jump-like magnetization under the influence of the applied magnetic field ("Barkhausen effect"). The jump-like magnetization reversal of an amorphous metal fiber is accompanied by the emission of an electromagnetic pulse, which allows reliable non-contact, remote control of the authenticity of a protected medium. By changing the morphology (geometrical dimensions) of the magnetic elements, their number in the tag, as well as the properties of their material, it is possible to achieve a given set of ratios of the intensities and repetition phases of electromagnetic pulses emitted by the tag under the influence of an external magnetic field. In turn, this allows coding and / or identification of protected objects - information carriers.

Thus, by varying the chemical composition of the alloy and the size of the microwires, it is possible to design protective tags with specified properties, characterized by the ratio of the intensities and the repetition phases of the emitted electromagnetic pulses when exposed to an external alternating magnetic field. In this case, the set of phases and ratios of pulse intensities can be considered as a "key" or "code" used to identify the carrier containing the label.

A security (identification) mark is understood as a device, at least one of the elements of which is a magnetic element made of a ferromagnetic alloy, which has a certain geometric shape and specified magnetic properties, and serves as a distinctive feature or identifier.

The traditional method of manufacturing fibers (wires) from amorphous metal alloys, described in the sources, consists in ultrafast cooling (up to 1 million ° C per second) of the wire, when it is pulled out of the melt through a die at the stage of material formation.

The complete technological process of manufacturing a wire suitable for use as a label in determining the authenticity of an information carrier consists in heating an alloy located in a glass tube to the melting temperature, overheating the resulting melt, followed by its pulling into a capillary tube and its rapid cooling. Next, the wire is cut into pieces, which are used as tag elements, and, if necessary, glued into briquettes with water-soluble glue - for ease of transportation and use.

A number of technical solutions are known that use amorphous metal fibers as tags in electronic monitoring systems for objects, in the keys of access systems, and also as elements for determining the authenticity.

From the international publication WO 02082475 (publ. 17.10.2002) there are known labels, which are a piece of microwire made of an amorphous metal alloy based on cobalt; The microwire contains a core made of a ferromagnetic alloy, consisting of cobalt, iron, manganese, boron and silicon selected in different percentages, exhibits magnetically unstable properties during magnetization reversal and is characterized by an almost rectangular hysteresis loop. The microwire core is covered with a glass sheath, the diameter of which is in the range from 5 to 35 microns. The microwire is manufactured by heating the alloy located in the glass tube to the melting temperature at which the tube material softens, the alloy overheats, followed by pulling the softened tube into the capillary tube and then cooling the capillary tube with the alloy. Next, the microwire is cut into pieces that are used as magnetic elements of the tags. In the manufacturing process, depending on the applied time and temperature conditions, an alloy can be obtained having an amorphous, amorphous-crystalline, microcrystalline or fine-crystalline microstructure.

The disadvantage of the known labels is that the coding units made of these fibers do not have the required stability of their electrophysical (magnetic) properties, and, as a consequence, sufficient registration reliability due to the absence of any control of the conductivity during the fiber casting process.

There is a known method of making a wire from an amorphous magnetic alloy, including placing a metal workpiece in a glass tube, melting a metal workpiece together with a tube, pulling a metal melt in the form of a metal wire covered with a glass layer, cooling to obtain an amorphous alloy wire covered with a glass layer, removing it from the surface of the wire of the glass layer (RF patent for invention No. 2430433. publ. 09/27/2011). Removal of the glass layer is carried out by pulling the wire along the curved surface of the solid across the generating curved surface with a radius of curvature that provides a tensile stress in the glass layer equal to or greater than its tensile strength and tensile stress in the wire when bending during its pulling across the generating line of the curved surface of the solid in the range of tensile strength of glass and elastic limit of amorphous alloy wire.

The stability of the electrophysical (magnetic) properties of the known fibers is insufficient for reliable registration, due to the absence of any control of the conductivity when the fiber is cast.

For the same reason, the labels described in the published applications of the Russian Federation for inventions No. 2003101292 and 2007111536, as well as in the patent of the Russian Federation for invention No. 2219299 (publ. 20.12.2003), do not have sufficient stability.

There is a known method of making wire from an amorphous alloy, including placing a metal workpiece in a glass tube, melting a metal workpiece, drawing out a metal melt in the form of a metal wire covered with a glass layer, cooling the wire alloy while maintaining the amorphous state of the wire alloy covered with a glass layer, removing a glass layer from the surface amorphous alloy wire. Removal of the glass layer from the surface of the amorphous alloy wire is performed by pulling the amorphous alloy wire covered with a glass layer along the curved surface of the solid across the generating curved surface (RF published application for invention No. 2009138455, publ. 27.04.2011).

In addition to the disadvantage already noted above, associated with the lack of conductivity control, this solution does not describe the process and method of forming a security label that includes more than one coding element based on microwires with different magnetic properties.

A magnetic element of an identification tag is known from the prior art, which is made in the form of at least one piece of microwire with practically zero magnetostriction, having a ferromagnetic alloy core covered with a glass shell (US patent No. 6441737, publ. 08.27.2002). This microwire is made of a cobalt-based alloy with a different percentage of Co, Fe, Mn, B, and Si, which determines its different microstructure. The magnetic element is made by casting a microwire from a melt having a ferromagnetic alloy core covered with a glass shell, and cutting the microwire into lengths. The marks are formed from the obtained microwire segments using one segment or several segments connected in different ways.

Known RF patent No. 2698736 (publ. 08/29/2019), disclosing a method for obtaining duplicated amorphous metal fiber, however, this solution does not describe the proposed method of application and registration of these fibers.

Known technical solution, set forth in the patent of the Russian Federation No. 2638848 (publ. 12/18/2017), characterizing the method of protecting valuable documents from counterfeiting by using special multi-strand amorphous metal fibers. However, this solution does not describe the proposed or similar method of managing access rights to a document, which determines the permissible set of permissions and rules, in particular, allowing or prohibiting copying.

Known (RF patent No. 2467391, publ. 20.11.2012) a method of ensuring the protection of software (software) and data from copying, illegal use, unauthorized distribution and access, containing stages at which:

- send a request to an electronic distributed key built on the basis of a wired or wireless reader device connected to a computer or a device on which software is running and data is stored, and a set of auxiliary modules, while auxiliary modules are rigidly tied to a physical place by embedding in rigidly fixed constituent parts of the anchor point;

- form a deterministic response to the request using auxiliary modules;

- receive, and, if necessary, analyze, a response from an electronic distributed key, and prohibit or restrict access to data and software operation in the absence of a signal from at least one auxiliary module.

It is also known (RF patent No. 2530713, publ. 10.10.2014) a method of controlling the process of copying documents by means of a multifunctional device from a paper medium.

When implementing a known method:

- scan N pages of the document, where N = 1, 2, 3 ... n;

- process the resulting digitized image of the document;

- print N pages of the document;

moreover

- before the start of copying the first page of the document, the presence of a signal from the scanning module is constantly monitored, and in case of detection of a signal of the start of the scanning process, the recording of said signal in the memory device in the form of a data array is initiated;

- detecting a change in the intensity of the light reflection signal of the scanning module with a duration of t≤10 ms;

- save the image of the first page of the document in the storage device;

- repeat the scanning and detection steps for each of the n pages of the document;

- after storing the n-th page of the document in the storage device, the document data array is converted and saved as a document file.

It is also known (RF patent No. 2647643, publ. 03/16/2018) a system for setting a confidentiality label in an electronic document, accounting and monitoring work with confidential electronic documents, characterized by the fact that the system contains a marking subsystem, an administration subsystem, a data storage subsystem, a data processing subsystem and a monitoring subsystem, while the marking subsystem is configured to set a confidentiality label on an electronic document having both a visual and digital form and to configure user access rights to confidentiality labels; the administration subsystem is configured to change the settings of the confidentiality label, generate and send notifications on events related to confidentiality labels in Microsoft Office electronic documents; the data storage subsystem is configured to store data about the confidentiality label and the confidentiality label settings; the data processing subsystem is configured to request the privacy label settings from the data storage subsystem and transfer the privacy label settings to the monitoring subsystem and the marking subsystem; the monitoring subsystem is configured to request data on the privacy label settings from the data processing subsystem, provide data on the privacy label settings to the marking subsystem and transmit data on the privacy label to the data processing subsystem.

A search in the patent and scientific and technical literature did not reveal a source of information disclosing a method for identifying an information carrier made by a printing method and providing the possibility of authorized manipulations with the information carrier.

The technical problem solved by the use of the developed technical solution consists in the development of a method for identifying an information carrier, which makes it possible to manipulate the information carrier, which is a sheet material made on a cellulose-paper or plastic basis.

The technical result achieved by the implementation of the developed method consists in preventing unauthorized manipulations with the sheet carrier of information, made on a pulp and paper or plastic base.

To achieve this technical result, it is proposed to use the developed method for preventing unauthorized use of the information carrier, characterized by the fact that an encoding element is introduced into the information carrier based on at least one multicore amorphous-metal fiber with a given response to the action of an alternating magnetic field at a given distance from the information carrier. a sensor for contactless identification of a coding element in an alternating magnetic field, connected to a microprocessor unit with software, which, on the basis of the data received from the sensor, assigns the information carrier to a specific type in the adopted hierarchical system, in which, depending on the type of medium, a set of permitted actions with it is established , and generates a control signal to allow / prohibit the implementation of these actions with the information carrier.

The information carriers to which the developed method is applicable include, at least, drawings, regulatory and technical documentation, document forms, plastic cards, passports, books, and other printing products. The specified list does not limit the scope of the developed method.

An unauthorized action on a data carrier can be copying, moving from the protected area, printing, scanning, destruction. The above list does not limit the type of unauthorized actions on the data carrier

In some embodiments of the developed method, the coding element is a piece of stranded amorphous metal fiber with a length from 1 mm to 250 mm.

In such an embodiment, the coding element preferably, but not necessarily, consists of multi-strand amorphous-metallic fibers made on the basis of an iron-cobalt alloy containing chromium, boron and silicon, or based on an iron-nickel alloy containing phosphorus, boron and sulfur.

Also, the coding element can be made in the form of amorphous-metal fibers with a given number of cores having different desired properties, which are connected in the form of a bundle, or a flat structure by longitudinal gluing with an adhesive composition, which, after curing, has a breaking force, leading to guaranteed destruction of individual cores ...

In some embodiments of the developed method, the output of the microprocessor unit can be connected to a device for performing an action on the storage medium, while the software of the microprocessor unit is configured to generate a signal prohibiting the operation of the said device.

In some embodiments, the coding element is exposed to an alternating magnetic field with a frequency of 100 to 100,000 Hz and a field strength of 0.1 to 100 Oe.

The control signal can be sent to a printing, scanning and / or other sheet-feeding device, which is a network or local printer, a network or local scanner, a multifunctional printer (MFP), a paper shredder, a shredder, a room access control system, a sorting machine, a device for storing and / or carrying documents, and the set of permitted actions of the device may include copying, scanning, printing, destroying a document, or the set of permitted actions of the device includes moving a document from a protected area and / or premises and / or a storage cell.

The device used may contain a counter of signals allowing an action to be performed with the storage medium. In this case, the software of the device contains information indicating how many operations with the storage medium can be performed.

Below are examples of implementation of the invention.

Example 1

Information carrier in the form of a paper sheet of A2 format weighing one square meter 190 g, contains coding elements uniformly randomly located in a paper base on the basis of double (two-core) amorphous-metal fibers.

The fiber veins were formed by induction casting on an Ulitovsky-Taylor installation.

One of the veins has a diameter of 10 microns, and the second - 20 microns, both veins are made on the basis of an iron-cobalt alloy with a content of components, wt. %:

With 49.5 Fe 50.0 Cr 0.2 IN 0.1 Si 0.2

Both cores have a shell of low-melting glass with the following content of components, wt. %:

Bi ₂ O ₃ 42.0 PbO 38.0 ZnO 12.0 SiO ₂ 2.0 B ₂ O ₃ 6.0

To form the coding elements, these cores are glued into bundles of two cores with BF-2 water-soluble glue based on polyvinylstyrene, and then they are cut into sections of 10 mm.

Coding elements with a length of 10 mm are introduced into the paper stock of the carrier at the stage of paper casting.

A technical document in the form of a drawing is made on the specified medium, subject to accounting.

The drawing is kept in a room equipped with an access control system. The access control system contains a sensor that controls the response of the coding elements included in the paper sheet on which the drawing is made, in an alternating magnetic field with a frequency of 1000 Hz and an intensity of 100 Oe (oersted).

When moving the information carrier in the form of a drawing past the sensor, it captures two responses with a given phase difference relative to the exciting alternating magnetic field, and identifies the presence of a coding element corresponding to the drawing, for which the current permission hierarchy has established a restriction on removal from the room.

The access control system to the room contains a microprocessor unit with software, which, based on a signal from the sensor, classifies a document in the form of a drawing on paper to documents for which the current hierarchy of permissions does not allow taking out of this room, and automatically turns on an alarm that notifies about an attempt to take the drawing out of its limits.

Example 2

The information carrier in the form of a polygraphic publication of the A5 format, made in the form of a book of 120 pages, contains coding elements based on a two-core amorphous-metal fiber 100 mm long, glued inside the spine.

The strands of fibers and the coding element as a whole were formed similarly to example 1.

The indicated medium has historical value and is subject to accounting.

There is a second information carrier in the form of a sheet of A2 format, containing a coding element in the composition of the paper pulp, which is a drawing. The coding element of the second carrier differs from the first one: one of the cores has a diameter of 15 μm, and the second - 35 μm, both cores are made on the basis of an iron-cobalt alloy with a content of components, wt. %:

With 25.0 Fe 74.0 Cr 0.9 Si 0.1

The rest of the manufacturing process of the coding element is similar to that described in example 1.

The second storage medium contains information of restricted distribution, and has restrictions on copying and scanning.

Both media are stored in a room equipped with an access control system and specialized copying and duplicating devices.

The room access control system and duplicating devices contain sensors that contactlessly control the responses from the coding elements included in the storage media in an alternating magnetic field with a frequency of 10,000 Hz and an intensity of 50 Oe (oersted).

When both information carriers move past the access control system sensor installed on the entrance door to the room, the responses from the coding elements are recorded, characterized by a given phase difference relative to the exciting alternating magnetic field, and their presence and variety are identified.

At the same time, the system of permissions operating in the room sets a restriction on the removal of media of both fixed types, but at the same time establishes permission for copying media in the form of a book, but does not allow copying media in the form of drawings.

The access control system to the room contains a microprocessor unit with software, which, based on a signal from the sensor, assigns information carriers in the form of a drawing and in the form of a book to documents that are prohibited from being taken out of this room, and automatically turns on an alarm that notifies of an attempt removal of carriers beyond its limits.

When an attempt is made to scan information carriers on a special copier located in the room, the microprocessor unit of the copier, on the basis of a signal from the sensor, classifies the information carrier in the form of a book among the documents in respect of which the scanning action is permitted, and carries out it.

When an attempt is made to scan a data carrier in the form of a drawing on the specified device, the microprocessor unit of the copier, based on a signal from the sensor, classifies the data carrier in the form of a drawing as documents in relation to which scanning is prohibited, automatically disables the copier and turns on an alarm indicating an unauthorized copy attempt.

Example 3

An example of a hierarchical system of permitted actions with an information carrier in the form of a document, depending on its type, associated with the type of encoding element embedded in the document, is given in Table 1 (for example, a multifunctional printing and copying device).

Claims (8)

1. A method for preventing unauthorized use of an information carrier, characterized in that an encoding element is introduced into the information carrier based on at least one multicore amorphous-metal fiber with a given response to the action of an alternating magnetic field, while a sensor for contactless identification of a coding element in an alternating magnetic field, connected to a microprocessor unit with software, which, on the basis of the data received from the sensor, refers the information carrier to a specific type in the adopted hierarchical system, in which, depending on the type of medium, a set of permitted actions with it is established, and generates a control signal to allow / prohibit the implementation of these actions with the information carrier. 2. The method according to claim 1, characterized in that the unauthorized action is copying, moving from the protected area, printing, scanning, destroying or otherwise. 3. The method according to claim 1, characterized in that the coding element is a piece of stranded amorphous metal fiber with a length of 1 mm to 250 mm. 4. A method according to claim 1, characterized in that the coding element consists of multi-strand amorphous-metallic fibers made on the basis of an iron-cobalt alloy containing chromium, boron and silicon, or based on an iron-nickel alloy containing phosphorus, boron and sulfur. 5. The method according to claim 1, characterized in that the coding element is made in the form of amorphous-metallic fibers with a predetermined number of cores with predetermined magnetic properties, and the fibers with different coercive forces are connected in the form of a bundle or flat structure by longitudinal gluing with an adhesive composition, which, after hardening, has a breaking force leading to guaranteed destruction of individual strands. 6. The method according to claim 5, characterized in that the coding element in the form of amorphous metal fibers with a predetermined number of cores contains on its surface in the form of a shell, or as part of an adhesive composition for gluing a beam, at least one chemical compound for expert identification of said element by laboratory methods. 7. The method according to claim 1, characterized in that the output of the microprocessor unit is connected to a device for performing an action on the information carrier, while the software of the microprocessor unit is configured to generate a signal prohibiting the operation of said device. 8. The method according to claim 1, characterized in that the effect of an alternating magnetic field is carried out with a frequency of 100 to 100,000 Hz and a field strength of 0.1 to 100 Oe.