Original title: Falsified seals defrauded Tencent's 16 million people only because these anti-counterfeiting techniques were not used

Recently, the contract dispute between Lao Ganma and Tencent can be described as an interesting fact that everyone talked about after dinner. The three of them defrauded Tencent of 16 million in advertising fees by falsifying seals, and this also highlights the importance of seals.

Speaking of seals, they can be described as a symbol of power. From the earliest feudal dynasty, the country's juxin, to the current government and enterprise offices, a seal is essential for any clauses, clauses, or contracts.

In response to this, some media have popularized science to teach everyone how to identify these fake stamps more accurately.

For us ordinary people, the thing called a seal is nothing more than a circle with a five-pointed star in the middle of a line. It has no technical content. There are even people who use radishes to falsify stamps. Actually,Under the unremarkable exterior of the seal, various mysteries are hidden.

First,There are national standards for seal specifications。 Different enterprises, institutions, and different types of seals have different specifications. And these standards are also the first step in the fight against counterfeiting.

Furthermore,For each seal to have its corresponding legal effect, it is necessary to first apply for a “stamp engraving license” and then go to a qualified stamp department formulated by the public security organ to stamp the stamp。 After the stamp is engraved, a double filing for public security and industry is carried out, and the filing materials can be used to verify the authenticity of the seal at any time.

The chapter also undergoes extensive anti-counterfeiting treatment when engraved. For example, what is commonly thought of as the missing places that are “not covered” when stamped is actually a type of security pattern randomly generated during engraving.

Furthermore,The commonly used national shield stamp system has its own special Song charactersWhen engraving, the font arrangement, angle, and strokes will be fine-tuned so that the model is difficult to detect with the naked eye, and fingerprints can even be added to the chapter. These methods all provide a great cost of forgery.Sometimes there is also an anti-counterfeiting code on the outer ring or bottom of the seal, which is equivalent to the ID number of the seal. The public security organ uniformly records it..

But with the popularity of PS technology now, is it possible to go directly to the P chapter? Theoretically speaking, it's not a difficult problem, but you probably don't know,In addition to seals, ink paste is also anti-counterfeiting.

Currently, there are three types of printing clay anti-counterfeiting technologies, namely thermal anti-counterfeiting, UV fluorescence anti-counterfeiting, and infrared anti-counterfeiting。 For example, UV fluorescence anti-counterfeiting. The printed surface contains dark lines that are invisible under normal circumstances, and are only shown under fluorescent light. Even if the actual P has a perfect seal, falsification can still be detected during inspection of the hidden money.

And with the development of smart phones, seals have also begun to use more convenient authentication technology,For example, if you add an NFC chip to the certificate, as long as you use your phone to read the chip, the stamp filing information will be displayed. In 2019, trials of a new type of G-code anti-counterfeiting seal also beganIt can be simply understood as incorporating a QR code into the seal. You can determine whether the seal is real or fake by simply scanning it with your phone.