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What is SealVector ® ?
This is a kind of security information matrix formed by combining the traceability of traditional two-dimensional code and the non-reproducibility of biometric anti-counterfeiting.
SealVector ® 's anti-counterfeiting capabilities are based on a combination of informatics, cryptography and cryptography theory. By implementing SealVector ® measurement and analysis of the read, the information channels can be determined using the original, copy or counterfeit goods. At the same time, considering the partial numerical damage that SealVector ® may have during transportation and sales, the founder of the technology, ATT (AdvancedTrack & Trace), provides a special image processing algorithm application.
SealVector ® looks like a small cube, as shown in Figure 1. The standard size is 4.49mm × 4.49mm. There are no specific requirements for color. In general, SealVector ® is embedded in the QR code area. The default color is the same as the QR code and is black.
SealVector ® generation principle and characteristics
1.SealVector ® generation principle
SealVector ® originated from digital bitmaps and was generated by ATT's secure server. Generating a SealVector ® requires two types of information: the carrier and the key.
Wherein the carrier consists of a series of information, and has a unique identification code (SealVector ® contains the unique ID number), this information and associated products. At the same time, the keys are securely stored on the ATT company's servers, each customer has a different key and cannot be accessed by any other party.
Specifically, generating SealVector ® is divided into the following steps:
(1) encrypting the carrier to obtain a binary sequence;
(2) adding an error correcting code and a convolutional code;
(3) Copying information to meet space requirements;
(4) Irregularly repeating information using a key;
(5) Generating a 2D pattern from the encrypted binary sequence.
Technical characteristics of 2.SealVector ®
SealVector ® uses continuous encryption and scrambling to generate symmetric and asymmetric encryption using quantum keys, providing powerful verification protection that protects the traceability and identification of protected products from interference.
SealVector ® authentication properties may be required by layering symmetric or asymmetric access protection. SealVector's anti-counterfeiting mark can be integrated into the product's design documentation, or plate-making applications, or integrated into a printed or marked workflow. The information provided by SealVector ® consists of geometrically-free stacked tiles, so it can achieve hierarchical access at several levels. Each module is protected by a symmetric or asymmetric access key according to different needs.
In general, ordinary eye can not distinguish between two different SealVector ® content, although indeed can distinguish the amplification device different from, but can not be translated and decoded. Therefore, the counterfeiter simply copies the "pattern" itself in a physical sense, and cannot read meaningful information. Even if it is enlarged for analysis, it cannot decipher the decoding. This eliminates the possibility that the SealVector ® technology is forged.
The main value of SealVector ® is its unique universal identification number. This figure allows the generation establish a clear connection with SealVector ® fully protected on the server, the application may be required to insert additional values or identifiers.
SealVector can be applied to the surface of various materials by printing or marking without changing the production process:
(1) can be applied to any substrate, including glass, aluminum, PVC, cardboard, etc.;
(2) can be applied to any Processing processes such as printing , including Offset printing , gravure printing, flexo printing, digital printing, and laser pattern molding;
(3) It can efficiently and quickly combine other anti-counterfeiting technologies, including RFID, holographic images, variable guilloches, Variable data , biotechnology, etc.
In this way, regardless of the production process, the same technology and the same reader (smartphone, scanner, digital camera, etc.) can be used to protect from the entire supply chain to the sales link. Data can be managed by the same tool.
Comparison of SealVector ® and ordinary QR codes
Although the conventional two-dimensional bar codes generated by the encryption key and a carrier, but still can be distinguished by two basic points SealVector ®.
First, SealVector ® deliberately high resolution printing to make the data easy to produce data source is lost after being copied. After the error correction code and anti-copy means are added, the bitmap of the strong bit can be read from the scanned pattern.
In contrast, most QR codes have relatively low error correction capabilities (such as Reed-Solomon codes or data matrices for convolutional codes), which usually use lower resolution (ie individual black/ White "cells" are larger) to print to avoid data attenuation.
Second, the general two-dimensional code (matrix data, the QR code or the like) generating a contrast technique, SealVector ® comprising the step of interference, which requires a key for decoding.
SealVector ® from the data source to continue printing is automatically attenuated, while this "data attenuator" is an irreversible process, means for counterfeiters to copy the matrix has been degraded, the matrix will suffer further damage, as shown in FIG 2 Show.
Figure 2 Schematic diagram of data attenuation during printing/copying
Reading SealVector ®, it must require specific keys for obtaining internal information and generate a score. This score is used the interference associated with the source code, and release the internal information based on the corresponding scanned image SealVector ®. Below a certain score (or the error rate exceeds a certain percentage), the error correction function cannot correctly decode the load information. Therefore, this score limit is called the threshold of decoding.
Of course, the situation can not be decoded properly generally does not appear in the original SealVector ® logo, because the size of the load information has been set to ensure that SealVector ® can be decoded, the whole process is set up error correction capability accordingly, expected some Degree of attenuation.
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