Association method for variable digital authentication information of variable holographic material and anti-counterfeiting printed matter
By introducing QR codes into variable holographic materials and anti-counterfeiting printed materials, the precise matching and correlation of encoded information is achieved, and the problems of difficulty in information transmission and high production complexity in the prior art are solved, the reliability and stability of anti-counterfeiting are improved, and the production cost is reduced.
Patent Information
- Application Number
- CN202411568257.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-02-25
AI Technical Summary
The prior art is difficult to effectively correlate variable holographic materials with anti-counterfeiting printed materials, resulting in difficult information transmission, high production complexity, high cost and inconsistent results in large-scale production.
By introducing QR codes as a bridge connecting two different materials, coded graphic information is generated and split and assigned to variable holographic materials and anti-counterfeiting printing materials, the precise matching and correlation of coded information is achieved.
It improves the reliability and stability of anti-counterfeiting, reduces production costs and complexity, and ensures the security of encoded data and the accuracy of information.
Smart Images
Figure CN119514585A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of anti-counterfeiting, and relates to a method and a device for associating variable holographic materials with variable digital authentication information of anti-counterfeiting printed products. Background Art
[0002] In the modern commodity market, the continuous development of anti-counterfeiting technology is essential to ensure the authenticity of products and the reputation of brands. As an advanced anti-counterfeiting method, variable holographic materials provide highly reliable anti-counterfeiting protection for products with their unique optical properties, such as color and image effects that change with angles, and difficult-to-copy microstructures. However, their production usually requires complex processes and expensive equipment, which is costly.
[0003] Anti-counterfeiting printed materials are another common anti-counterfeiting method, which uses special printing processes and materials, such as special inks, microtext, invisible patterns, etc., to form unique anti-counterfeiting marks on paper or other printed materials. However, due to the relative popularity and imitability of printing technology, its anti-counterfeiting strength is limited in some cases.
[0004] Although variable holographic materials and anti-counterfeiting printed materials each have their own advantages in the field of anti-counterfeiting, it is not easy to link them. The two materials are often produced through different production lines, each with its own unique production process, technical requirements and quality standards.
[0005] In the traditional production model, the production line of variable holographic materials focuses on manufacturing materials with specific optical effects, which requires extremely high process precision and material quality, while the production line of anti-counterfeiting printed products focuses on the realization of printing technology and the control of printing quality.
[0006] This separate production method leads to the following problems: first, it is difficult to transmit information between the two, making it difficult to achieve accurate matching and association; second, it increases the complexity and cost of production and reduces production efficiency; third, it is difficult to ensure the consistency and stability of the association effect of the two materials in large-scale production.
[0007] In order to solve these problems, the present invention provides a method for associating variable holographic materials with variable digital authentication information of anti-counterfeiting printed products. By introducing a two-dimensional code as a bridge connecting two different materials, the problem of information transmission and matching is cleverly solved, and the variable holographic material and the variable digital authentication information of the anti-counterfeiting printed product are efficiently and accurately associated, thereby improving the reliability and stability of anti-counterfeiting and reducing production costs and production complexity. Summary of the invention
[0008] The present invention provides a method for associating variable holographic materials with variable digital authentication information of anti-counterfeiting printed products. By introducing a two-dimensional code as a bridge connecting two different materials, the problem of information transmission and matching is cleverly solved, and efficient and accurate association of variable holographic materials with variable digital authentication information of anti-counterfeiting printed products is achieved, thereby improving the reliability and stability of anti-counterfeiting and reducing production costs and complexity.
[0009] In order to solve the above problems, the technical solution adopted by the invention is:
[0010] 1. A method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter, comprising the following main steps:
[0011] S1 generates coded graphic information, wherein the coded graphic information has a plurality of codes set therein;
[0012] S2 defines a plurality of pieces of variable holographic materials as a group of coded graphic information carriers;
[0013] S3 determines the code splitting and assigning rules, splits the code in the coded graphic information and determines the position information of the split codes on a group of coded graphic information carriers, and assigns the split codes to each variable holographic material according to the position information;
[0014] S4 generates a plurality of common anti-counterfeiting codes on the anti-counterfeiting printed matter according to the corresponding relationship with a group of coded graphic information carriers and defines them as a group of coded identification information carriers; generates coded identification information from the position information of the common anti-counterfeiting codes in a group of coded identification information carriers and records them on the anti-counterfeiting printed matter;
[0015] S5: combining a group of coded graphic information carriers and a group of coded identification information carriers according to a corresponding relationship to obtain a group of anti-counterfeiting code labels;
[0016] S6 uses the coded graphic information and the coded identification information as intermediaries, and associates the code on the variable holographic material with the common anti-counterfeiting code according to the corresponding positional relationship between the variable holographic material and the common anti-counterfeiting code;
[0017] S7 cuts off the hollow area of the anti-counterfeiting code label, and removes the coded graphic information part on the variable holographic material and the coded identification information part on the anti-counterfeiting print at the same time.
[0018] The principle and advantage of this scheme are: through a series of rigorous code generation, splitting, assignment, association and combination operations, the variable holographic material is accurately matched and associated with the coding information on the anti-counterfeiting printed matter. The coded graphic information is used as the basis, and after splitting and position determination, it is respectively assigned to the variable holographic material and the corresponding coding mark is generated on the anti-counterfeiting printed matter, and then associated and combined through the corresponding relationship to finally form a complete anti-counterfeiting code label. At the same time, post-processing is carried out to ensure information security. Through the code association process, the difficulty of anti-counterfeiting is greatly increased, making it difficult for counterfeiters to copy and imitate the entire process and information, thereby improving the anti-counterfeiting reliability of the product. Strict code splitting, assignment and association rules reduce errors in the entire process, ensure the accuracy and stability of the generated anti-counterfeiting code, effectively protect the security of the coded data, and reduce the risk of information leakage and tampering.
[0019] The beneficial effects of this program:
[0020] Compared with the existing technology, this solution constructs a multiple and closely related anti-counterfeiting system through the code splitting, assignment and association process, which greatly increases the difficulty and cost of counterfeiting and effectively prevents the emergence of counterfeit and shoddy products. The coding processing rules ensure the accuracy of the coding in the entire association process, reduce errors, and make the anti-counterfeiting code more reliable and stable during production. During the production process, by associating and corresponding the coded graphic information and the coded identification information, the coded identification information carriers and the coded graphic information carriers produced by two different production lines are combined in correspondence to generate anti-counterfeiting labels, realizing efficient and accurate association between variable holographic materials and variable digital authentication information of anti-counterfeiting printed products, thereby improving the reliability and stability of anti-counterfeiting and reducing production costs and complexity.
[0021] Strict matrix rules and coding allocation methods reduce errors in the generation, assignment and association of codes, ensuring the accuracy and stability of anti-counterfeiting codes. The solution has high flexibility and versatility, and can adapt to the anti-counterfeiting needs of products of different types, specifications and application scenarios. The entire process is reasonably designed, and the steps work together smoothly, avoiding cumbersome and complicated operations and improving production efficiency. The removal of key information in the coding processing and die-cutting process effectively protects the security of the coded data and reduces the risk of process leakage and tampering of the anti-counterfeiting code during the production process.
[0022] Furthermore, the coded graphics in S1 include but are not limited to barcodes or QR codes, which are suitable for digital numbers, QR, DM and other data information, covering a variety of coded graphics and data types, so that the technology or system can be widely used in different scenarios and needs. Whether it is simple digital numbers or complex QR, DM codes, etc., they can be effectively processed and utilized. In actual applications, it is often necessary to connect and exchange data with systems developed by different suppliers and at different times. Good compatibility can reduce the difficulty and risk of technology integration.
[0023] Furthermore, the printed products in S3 include but are not limited to self-adhesive paper, coated paper, PET, PVC, and BOPP, providing a variety of material options with different properties to meet different application scenarios and product requirements.
[0024] Furthermore, in S1, the code in the coded graphic information is a random combination of several numbers and letters, which increases the possible arrangements and combinations of the code, making the code more difficult to predict and crack, thereby improving anti-counterfeiting security. This mixed coding method can be easily processed and identified in various systems and devices, and both digital processing systems and character-based processing systems can effectively interpret and verify the code.
[0025] Furthermore, several codes in the information of the coded pattern set in S1 are split into multiple parts and respectively assigned to the coded identification areas on the variable holographic material.
[0026] Furthermore, in S1, the encoding of the generated coded graphic information is encrypted using a dynamic encryption algorithm, and the encryption key is dynamically generated based on a timestamp or a random number. The dynamic encryption algorithm and the dynamically generated encryption key make the encryption result generated each time different, greatly increasing the difficulty of cracking. Even if an attacker obtains the encrypted coded graphic information once, he cannot predict or crack the subsequent encrypted content based on previous cracking experience. Since the encryption key is dynamically generated based on a timestamp or a random number, the attacker cannot bypass verification by intercepting and reusing the previously encrypted coded graphic information.
[0027] Furthermore, in S5, the carrier material of the encoded graphic information and the carrier material of the encoded identification information are laminated together through hot stamping, and then the variable digital numbers of the two materials are collected by a collection device to achieve data association, and the two carrier materials are integrated into one, making it difficult for counterfeiters to separate and tamper with the information on one of the materials alone, thereby increasing the complexity and difficulty of anti-counterfeiting. The integrated production process and data association method can reduce the process and material waste in the production process, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is a flow chart of the method of the present invention;
[0029] Figure 2 It is a schematic diagram of the film-moving direction of the holographic material;
[0030] Figure 3 It is a schematic diagram of the distribution of the two-dimensional code information and the identifiable area of the holographic material;
[0031] Figure 4 This is a schematic diagram of the paper feeding of anti-counterfeiting printed matter and the lamination of variable holographic materials during the anti-counterfeiting label printing process. DETAILED DESCRIPTION
[0032] The embodiment is basically as shown in the attached Figure 1-4 Shown
[0033] Example 1
[0034] The method for associating variable holographic materials with variable digital authentication information of anti-counterfeiting printed products cleverly solves the problem of information transmission and matching by introducing coded graphics as a bridge connecting two different materials, and realizes efficient and accurate association of variable holographic materials with variable digital authentication information of anti-counterfeiting printed products, thereby improving the reliability and stability of anti-counterfeiting and reducing production costs and complexity.
[0035] The basic solution proposed in this plan includes the following main steps:
[0036] The method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter comprises the following main steps:
[0037] S1 generates coded graphic information, wherein the coded graphic information has a plurality of codes set therein;
[0038] S2 defines a plurality of pieces of variable holographic materials as a group of coded graphic information carriers;
[0039] S3 determines the code splitting and assigning rules, splits the code in the coded graphic information and determines the position information of the split codes on a group of coded graphic information carriers, and assigns the split codes to each variable holographic material according to the position information;
[0040] S4 generates a plurality of common anti-counterfeiting codes on the anti-counterfeiting printed matter according to the corresponding relationship with a group of coded graphic information carriers and defines them as a group of coded identification information carriers; generates coded identification information from the position information of the common anti-counterfeiting codes in a group of coded identification information carriers and records them on the anti-counterfeiting printed matter;
[0041] S5: combining a group of coded graphic information carriers and a group of coded identification information carriers according to a corresponding relationship to obtain a group of anti-counterfeiting code labels;
[0042] S6 uses the coded graphic information and the coded identification information as intermediaries, and associates the code on the variable holographic material with the common anti-counterfeiting code according to the corresponding positional relationship between the variable holographic material and the common anti-counterfeiting code;
[0043] S7 cuts off the hollow area of the anti-counterfeiting code label, and removes the coded graphic information part on the variable holographic material and the coded identification information part on the anti-counterfeiting print at the same time.
[0044] The core principle of this solution is to accurately match and associate the variable holographic material with the coding information on the anti-counterfeiting printed matter through code generation, splitting, assignment, association and combination operations. The coded graphic information is used as the basis, and after splitting and position determination, it is respectively assigned to the variable holographic material and the corresponding coding mark is generated on the anti-counterfeiting printed matter, and then associated and combined through the corresponding relationship to finally form a complete anti-counterfeiting code label. At the same time, post-processing is carried out to ensure information security. The code association process greatly increases the difficulty of anti-counterfeiting, making it difficult for counterfeiters to copy and imitate the entire process and information, thereby improving the anti-counterfeiting reliability of the product. Strict code splitting, assignment and association rules reduce errors in the entire process, ensure the accuracy and stability of the generated anti-counterfeiting code, remove the key coding information part in the post-processing, effectively protect the security of the coding data, and reduce the risk of information leakage and tampering.
[0045] Compared with the existing technology, this solution constructs a multiple and closely related anti-counterfeiting system through the code splitting, assignment and association process, which greatly increases the difficulty and cost of counterfeiting and effectively prevents the emergence of counterfeit and shoddy products. The coding processing rules ensure the accuracy of the coding in the entire association process, reduce errors, and make the anti-counterfeiting code more reliable and stable during production. During the production process, by associating and corresponding the coded graphic information and the coded identification information, the coded identification information carriers and the coded graphic information carriers produced by two different production lines are combined in correspondence to generate anti-counterfeiting labels, realizing efficient and accurate association between variable holographic materials and variable digital authentication information of anti-counterfeiting printed products, thereby improving the reliability and stability of anti-counterfeiting and reducing production costs and complexity.
[0046] The coded graphics in S1 include but are not limited to barcodes or QR codes, which are suitable for digital information, QR, DM and other data information, covering a variety of coded graphics and data types, so that the technology or system can be widely used in different scenarios and needs. Whether it is simple digital information or complex QR, DM codes, etc., they can be effectively processed and utilized. In actual applications, it is often necessary to connect and exchange data with systems developed by different suppliers and at different times. Good compatibility can reduce the difficulty and risk of technology integration.
[0047] The printed products in S3 include but are not limited to self-adhesive paper, coated paper, PET, PVC, and BOPP, providing a variety of material options with different properties to meet different application scenarios and product requirements.
[0048] In S1, the code in the coded graphic information is a random combination of numbers and letters, which increases the possible arrangements and combinations of the code, making the code more difficult to predict and crack, and improving the security of anti-counterfeiting. This mixed coding method can be easily processed and recognized in various systems and devices, and both digital processing systems and character-based processing systems can effectively interpret and verify the code.
[0049] The plurality of codes in the information of the coding pattern set in S1 are split into multiple parts and respectively assigned to the coding identification areas on the variable holographic material.
[0050] In S1, the encoding of the generated coded graphic information is encrypted using a dynamic encryption algorithm, and the encryption key is dynamically generated according to a timestamp or a random number. The dynamic encryption algorithm and the dynamically generated encryption key make the encryption result generated each time different, which greatly increases the difficulty of cracking. Even if an attacker obtains the coded graphic information after encryption once, he cannot predict or crack the subsequent encrypted content based on previous cracking experience. Since the encryption key is dynamically generated according to a timestamp or a random number, the attacker cannot bypass verification by intercepting and reusing the previously encrypted coded graphic information.
[0051] First, in step S1, randomly coded graphic information is generated. The coded graphics include but are not limited to barcodes or QR codes, which are suitable for digital numbers, QR, DM and other data information. For example, the coded graphic information is encoded as (M231, 211S, 5F31, 21DF, RW82, M2FE). These codes are composed of a random combination of numbers and letters and are encrypted using a dynamic encryption algorithm. The encryption key is dynamically generated according to the timestamp, and the split code is set through a matrix array.
[0052] Then, in step S2, several pieces of variable holographic materials are defined as a group of coded graphic information carriers, ready to carry the split codes.
[0053] Next, the code splitting and assigning rules are determined, the code in the coded graphic information is split and the position information of the split codes on a group of coded graphic information carriers is determined, and the split codes are assigned to each variable holographic material according to the position information.
[0054] This is followed by step S4, in which a number of common anti-counterfeiting codes are generated on the anti-counterfeiting printed matter based on the correspondence with a group of coded graphic information carriers and defined as a group of coded identification information carriers; the position information of the common anti-counterfeiting codes in a group of coded identification information carriers is generated into coded identification information and recorded on the anti-counterfeiting printed matter.
[0055] In step S5, a group of coded graphic information carriers and a group of coded identification information carriers are combined according to a corresponding relationship to obtain a group of anti-counterfeiting code labels.
[0056] With the coded graphic information and the coded identification information as intermediaries, the code on the variable holographic material is associated with the common anti-counterfeiting code according to the corresponding positional relationship between the variable holographic material and the common anti-counterfeiting code.
[0057] Finally, the hollow area of the anti-counterfeiting code label is cut off, and the coded graphic information part on the variable holographic material and the coded identification information part on the anti-counterfeiting printed matter are removed at the same time.
[0058] In the actual production process, variable holographic materials and ordinary anti-counterfeiting paper are produced on different production lines. The production line of variable holographic materials focuses on their unique optical properties and complex production processes, while the production line of ordinary anti-counterfeiting paper focuses on special materials and printing processes.
[0059] After the production of each is completed, the two are effectively combined through the above-mentioned coding graphics and coding identification association method. For example, the variable holographic material with the QR code is attached to the ordinary anti-counterfeiting paper with the corresponding barcode, or the two data information carrier materials are accurately hot-stamped through the previously prepared position information, and then laminated together, and then the variable digital of the two materials is collected by the collection equipment to realize the data association.
[0060] This association method is not only suitable for small-scale production of a single product, but its efficiency advantage is even more obvious when facing mass production needs. Since each step has been carefully designed and optimized, it can quickly and accurately complete the production and association of anti-counterfeiting codes for a large number of products.
[0061] At the same time, due to the use of multiple complex technologies and material combinations, such as dynamically encrypted QR codes, high-precision image recognition, artificial intelligence-optimized measurement values, and distributed ledger technology storage verification, the cost of copying and counterfeiting by counterfeiters is extremely high, greatly improving the anti-counterfeiting ability of the product.
[0062] Through such a technical solution, not only the association problem between variable holographic materials and ordinary anti-counterfeiting paper after production on different production lines is effectively solved, but also the needs of large-scale production are met, production efficiency is improved, and the anti-counterfeiting performance of the product is greatly enhanced. Specific embodiment 2:
[0064] S1: Generate QR code information
[0065] First, the QR code encoding graphic information "M231, 211S, 5F31, 21DF, RW82, M2FE" is generated according to the rules and encrypted.
[0066] Secondly: Then, select 6 pieces of variable holographic materials as a group of coded graphic information carriers, split the code into M231, 211S, 5F31, 21DF, RW82, M2FE and assign them to the variable holographic materials, "5F31," to the first piece, "211S" to the second piece, and so on.
[0067] Afterwards: according to the corresponding relationship with a group of coded graphic information carriers, a number of common anti-counterfeiting codes are generated on the anti-counterfeiting printed matter and defined as a group of coded identification information carriers; the position information of the common anti-counterfeiting codes in a group of coded identification information carriers is generated into a barcode and recorded on the anti-counterfeiting printed matter
[0068] Then: The holographic material is associated with the ordinary anti-counterfeiting paper
[0069] Each identification area of a set of coded holographic materials is compared with a set of common security codes on common security papers in order from left to right, and each identification area of the holographic materials is matched with the common security codes on common security papers one by one from left to right, for example, the first identification area corresponds to the first common security code, the second identification area corresponds to the second security code, and so on.
[0070] Then, after the comparison and correspondence, the barcode and QR code data information carrier materials are accurately hot-stamped through the previously prepared position information, and are laminated together. The information on the ordinary anti-counterfeiting code is scanned by the acquisition equipment to appear a link. After that, the corresponding coded information in the variable holographic material identification area is input into the ordinary anti-counterfeiting code for verification. The coded information on the variable holographic material is associated with the ordinary anti-counterfeiting code to form a complete anti-counterfeiting label. If successful, it is a finished product, and if failed, it is a data anomaly or a counterfeit. In addition, the verification connection that appears on each QR code is different and random, which improves the anti-counterfeiting performance.
[0071] Finally, a die-cutting process is performed to cut out the hollow area of the label and remove the QR code part on the variable holographic material to obtain multiple complete anti-counterfeiting code labels. By removing the QR code part on the variable holographic material, it is difficult for counterfeiters to fully understand the composition and production process of the entire anti-counterfeiting code label, and the final anti-counterfeiting label combines the unique optical properties of the holographic material and the specific information of ordinary anti-counterfeiting paper, which can provide effective anti-counterfeiting protection for the brand of liquor. Consumers or regulatory authorities can verify the authenticity and source of the product by scanning the QR code or barcode. The anti-counterfeiting printed materials in the above scheme include but are not limited to self-adhesive paper, coated paper, PET, PVC, and BOPP, providing a variety of material options with different characteristics to meet different application scenarios and product requirements. For example, self-adhesive paper is suitable for labels that need to be easily pasted, coated paper is suitable for high-quality printed materials, PET, PVC and BOPP have good weather resistance and flexibility, and are suitable for special environments or applications that require bending. Different products have different material requirements for printed products, and diversified choices can better meet the diversified needs of the market.
[0072] The above are only embodiments of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the invention belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter, comprising the following main steps: S1 generates coded graphic information, wherein the coded graphic information has a plurality of codes set therein; S2 defines a plurality of pieces of variable holographic materials as a group of coded graphic information carriers; S3 determines the code splitting and assigning rules, splits the code in the coded graphic information and determines the position information of the split codes on a group of coded graphic information carriers, and assigns the split codes to each variable holographic material according to the position information; S4 generates a plurality of common anti-counterfeiting codes on the anti-counterfeiting printed matter according to the corresponding relationship with a group of coded graphic information carriers and defines them as a group of coded identification information carriers; generates coded identification information from the position information of the common anti-counterfeiting codes in a group of coded identification information carriers and records them on the anti-counterfeiting printed matter; S5: combining a group of coded graphic information carriers and a group of coded identification information carriers according to a corresponding relationship to obtain a group of anti-counterfeiting code labels; S6 uses the coded graphic information and the coded identification information as intermediaries, and associates the code on the variable holographic material with the common anti-counterfeiting code according to the corresponding positional relationship between the variable holographic material and the common anti-counterfeiting code; S7 cuts off the hollow area of the anti-counterfeiting code label, and removes the coded graphic information part on the variable holographic material and the coded identification information part on the anti-counterfeiting print at the same time.
2. The method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter according to claim 1, characterized in that: The coded graphics in S1 include but are not limited to barcodes or QR codes, and are applicable to digital numbers, QR, DM and other data information.
3. The method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter according to claim 1, characterized in that: The printed products in S3 include but are not limited to self-adhesive paper, coated paper, PET, PVC, and BOPP.
4. The method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter according to claim 1, characterized in that: In S1, the code in the coded graphic information is a random combination of a number of numbers and letters.
5. The method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter according to claim 1, characterized in that: The plurality of codes generated from the information of the coding pattern set in S1 are split into a plurality of parts and respectively assigned to the coding identification areas on the variable holographic material.
6. The method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter according to claim 1, characterized in that: In S1, the code of the generated coded graphic information is encrypted using a dynamic encryption algorithm, and the encryption key is dynamically generated according to a timestamp or a random number.
7. The method for associating variable holographic material with variable digital authentication information of anti-counterfeiting printed matter according to claim 1, characterized in that: In S5, the carrier material of the coded graphic information and the carrier material of the coded identification information are laminated together by hot stamping, and then the variable digital numbers of the two materials are collected by a collection device to achieve data association.