ID cards, driver's licenses, birth certificates, A-level certificates, etc., have become the targets of individual perpetrators or criminal gangs. They seek personal gain by forging documents and official documents. The more complex the security anti-counterfeiting mark, the higher the requirement for the expert to clearly distinguish between true and false documents. The forensic department of the government of Stuttgart, Germany, used a high-end stereo microscope to track counterfeiters. This high-end device detects more than 1,200 suspicious documents per year for regional police and prosecutors. Martin Fischer came to the front desk of the district government every morning, and usually had a number of suspicious ID cards waiting for him to see him. These are all suspicious documents confiscated by the police during night patrols and inspections, waiting for Fischer's eyes to distinguish between true and false. A year ago, the Chief Superintendent obtained the qualification of a certification expert in the identification of a fraud certificate, achieving a training goal that perfectly matched his talent. Figure 1: The Leica M165 C stereo microscope with LED lighting, HD cameras and full HD monitors is undoubtedly a check for suspicious ID cards, visas and all types of documents for expert judges of the Martin Fischer – Stuttgart government document inspection. An essential tool for the pseudo. Comprehensive technical competitive advantage “Any document, whether printed, signed or stamped on paper, plastic or metal, such as a vehicle license, etc., can be handed over to me for authorization or forged purposes.†Fischer Said. “In order to detect professional counterfeits and provide unassailable evidence for my assessment, I must keep up with the times and keep up with the latest technological developments.†He knows a wide range and understands all document printing techniques, from the traditional The printing technology to the RFID chip and the latest ID security anti-counterfeiting mark are all in the air. Figure 2: The hologram is then inserted and the edges of the image are clearly visible under the microscope. From general to strange and rare fraud cases Global ID card and driver's license cases account for about 80% of his workload, followed by birth certificates and proof of citizenship. However, there are also many strange and rare cases. “Recently, I received a German certificate from the Goethe-Institut abroad that needs to be inspected. Another special task is to check whether the A-level math test paper has traces of change for the purpose of obtaining a place of progression after the submission.†Fischer Narrative Road. "But these are not the strangest. The most embarrassing case I have encountered is a single certificate from the Senegalese. This is a long and narrow piece of paper. The typesetting on the top is something I have never seen in my life. Before I judged, the challenge I faced was to find out what this type of document should look like." Whether it is investigating the personal story behind the numerous certificate fraud cases, or the court may make a judgment against the defendant based on the Fischer report, he always handles the case with a rigorous scientific attitude. "I only know the case after I provide the results. Only then can I perform the inspection in a neutral and unbiased manner," the expert stressed. Figure 3: A slightly concave number indicates that this is a genuine embossing. Counterfeiters - creativity and amateur coexistence Even the experts who never missed Fischer will be admired by the sophisticated and professional means of today's counterfeiters. ID cards and passports (and banknotes) carry the highest level of security. However, with the advancement of ID card anti-counterfeiting technology, counterfeiters will upgrade their equipment accordingly, and even try to fake RFID chips, holograms and micro-texts, and begin to imitate special printing techniques, such as iris or gravure printing and lasers. Engraving, etc. “Despite this,†Fischer explains, “the counterfeiters will never balance all security techniques. They usually focus on some particularly obvious features and put a lot of skill and effort into these features in order to replicate them clearly. feature. However, in terms of other features, they make some low-level mistakes that make it easier for me to catch them. One trick that counterfeiters often play is to affix a hologram, chip or other part of a genuine ID card. It is often difficult to find clues by touching these collages with the naked eye or by hand, depending on the technology of the counterfeiter. †Figure 4: This serial number is printed on a normal inkjet printer and cannot be clearly identified by the naked eye. Microscope - the most important tool The first step in dealing with each new case is usually to classify the documents in true and false terms. If Fischer does not recognize the file type, he searches the database for a reference sample. In the second step, check for obvious processing traces. The eye-catching and powerful touch he has trained can immediately detect the main processing traces, such as stamps being erased, handwritten to cover numbers, or a new image inserted in a different way. Then, it was the turn of the microscope. “If I don’t have a good microscope, I might not be able to do this. Most cases use a microscope to solve the problem,†Fischer said frankly. He used a high-performance stereo microscope - the Leica M165 C, which has a zoom range of 16.5:1, equipped with LED right-hand lights, a flexible LED fiber optic light guide, a mobile swivel arm, a high-definition camera and a Full HD monitor. Figure 5: This laser engraving is genuine. In fact, the laser prints the structure deep into the material. For example, lasers are used on plastics used in modern identity cards. 3D image and LED lighting for easy analysis “The stereo microscope combines excellent illumination and 3D viewing effects, which are critical to checking the smallest detail of the surface structure of the document. Higher superficial details can only be observed with a microscope, for example, trying to mimic laser engraving , gravure or letterpress elements, or mosaics that must be added later, such as chips, holograms, or serial numbers. In some places, for example, at the edge of a very small linear print model, at a transitional position, or in the direction of papermaking fibers, there is often a bias ," Fischer explained. Figure 6: In the gravure print, the embossed ink is clearly visible. Search for clues under the microscope If you only change the photo and you are very cautious when you exchange it, there will be no flaws in typography or data reading. Therefore, the only way to find clues is to use a microscope. Sometimes, Fischer bends the ID card, places it on the edge of the table, and bends down to see the edges of the inserted image. If he finds that there is a torn fiber on the side of the ID card that does not correspond to the back of the image, then the answer is very clear. “A fake image is still the most common trick used by counterfeiters to forge ID cards,†says Fischer. “If the falsification technique is high, searching for clues is no easy task. Therefore, I will use the highest magnification of the microscope to observe. For basic inspections, a low zoom range between 20 and 30x is usually very suitable.†In addition to the microscope, Fischer uses other instruments. For example, to check certain security features, he checks ink or printing dyes under ultraviolet or infrared light, or reads the chip's personal data. At the end of each inspection, Fischer will record his inspection results. His assessment usually also includes photographs of the microscope image (with detailed annotations). “I naturally take the report very carefully and make sure there are no unresolved issues in the report,†Fischer stressed. “I am rarely summoned to testify and explain to the court the reasons for my assessment report.†Figure 7a: On the left and below the picture, you can see a manually cut port. Here, the genuine security anti-counterfeit foil is cut and the original image is removed. The counterfeiter then inserts different images into these ports and masks them with composite foil. Figure 7b: Miniature tool for highlighting the corner of the ID card "Fake Foil". Figure 7c: The security feature mark under the image is lost. In this case, the security mark should be a yellow letter. Here, the ID card is damaged after the original image is removed. Concept of forging documents Undoubtedly, since the official documents and contracts have been used, people who violate the law have been guilty of forging documents. Constantine consecrated, a forged Roman emperor decree, the Roman Emperor Constantine I presented the land of Rome to the Roman church and the pope. This document was forged in the 8th century. This forgery The document even rewrote the history of Europe. The Holy See used this decree to give them more power than European rulers and achieved specific effects in the Middle Ages. According to legend, the document was issued by Constantine I in the fourth century, and it was not until 600 years later that the decree was proved to be false. Today, fraud on this scale is impossible. However, some people with evil thoughts still rely on fraud to seek personal gain, so that the police and the courts are struggling to fight such crimes. Melamine Board,Whiteboard With Stand,Mini Whiteboard,Desktop Whiteboards Dongguan Aoxing Audio Visual Equipment CO.,Ltd , https://www.aoxing-whiteboard.com
