Barcode anti-counterfeiting technology status analysis

As the market economy continues to develop and the market tends to become more integrated, counterfeit and shoddy commodities are rampant and damage the interests of consumers and producers. With the rapid development of computer technology, the application of barcode anti-counterfeiting technology to the anti-counterfeiting of commodities can effectively achieve the purpose of preventing famous products from being counterfeited and protecting the interests of consumers.

Bar code is the abbreviation of bar code. It is composed of a set of bars and spaces with different widths and different reflectances, which are combined according to a certain code to represent a set of data symbols. The barcode of the commodity itself does not have anti-counterfeiting capability, it is just a kind of commodity code, which is designed to use the computer to effectively manage the commodity. But if we can reasonably use bar code technology, including a reasonable choice of barcode carrier, a reasonable choice of barcode printing method, and a reasonable choice of barcode printing position, we can play the role of anti-counterfeiting.

The first is a reasonable choice of bar code printing method. The barcode is read by the computer, which requires high quality of the printed matter. The higher the quality of the printed matter, the higher the printing equipment and accuracy required. Similarly, the price of the equipment is higher. Counterfeiters are unable to purchase high-precision equipment, which has an anti-counterfeiting effect on commodities, and the higher the price of the equipment. The better the anti-counterfeiting effect.

The second is the correct design and use of barcodes on the packaging to achieve the purpose of anti-counterfeiting:

1. Invisible barcode

The invisible barcode can achieve the purpose of not destroying the overall effect of packaging and decoration, nor affecting the characteristics of the barcode. Similarly, after the invisible barcode is invisible, it is difficult for the general counterfeiters to imitate it.

Several forms of invisible barcodes:

(1) Overlay invisible barcode

The principle of this invisible barcode is that after the barcode is printed, it is covered with a specific film or coating, so that the barcode after processing is difficult for human eyes to read. Covered invisible bar code has good anti-counterfeiting effect, but its decoration effect is not ideal.

(2) Invisible barcode with photochemical treatment

Use optical methods to process common visible barcodes, so that it is difficult for people's eyes to find traces after treatment. They cannot be read by ordinary wavelength light and non-specific light. This invisible barcode is completely invisible and decorated. The effect is also very good, can also be designed as a double anti-counterfeiting packaging.

(3) Invisible barcode printed by invisible ink

This type of barcode can be divided into colorless functional ink printing barcodes and colored functional ink printing barcodes. For the former, barcodes printed with special inks such as fluorescent inks, thermochromic inks, phosphorescent inks, etc., such invisible barcodes must be used in printing. With specific illumination, the corresponding sensitive light source must be used in the barcode recognition. This barcode was originally invisible, and the barcode printed on the colored functional ink is generally printed with color-changing ink. The technology of invisible barcode printed with invisible ink is the same as that of general printing. But its anti-aging problem needs to be solved.

(4) Paper invisible barcode

This invisible barcode invisible medium and paper are fused by special photochemical treatment, can not be peeled off, can only be used for one-time use, can not be recognized by the human eye, can not be used for visible light photography, copying imitation, can only be used to distinguish The wavelength scanner reads the information in the barcode, and this scanner is also compatible with general black and white barcodes.

Two, two-dimensional barcode

The ordinary linear bar code can be called one-dimensional bar code, it has many advantages: easy to make, easy to read, fast input speed, high reliability, high standardization of reading equipment, easy to use online with computers and other control equipment, performance Tend to improve. However, its information capacity is small, and a larger information capacity must be obtained in its limited planar area. Expanding one-dimensional codes to two-dimensional barcodes is the most effective method.

The principle of anti-counterfeiting of two-dimensional barcodes is to encrypt and encode the digitized information entered by the barcode. For anti-counterfeiting applications, two-dimensional barcodes are very suitable.

3. Metal barcode

The bar code of the metal bar code is produced by electroplating the metal foil. Generally, the surface of the bar code is covered with a layer of polyester film. This bar code is read by a special metal bar code reader. The advantage is that the surface is not afraid of stains. Generally, bar codes are read by the reflection of light. This bar code is read by electromagnetic waves. Only the distance between the reader and the bar code will affect the bar code reading. Its anti-aging ability is strong, and the surface polyester film has strong adaptability when used outdoors. Metal barcodes can also be made into invisible codes. A light-tight protective film is used on the surface, so that the human eye cannot distinguish the existence of the barcode, so as to make a covered metal invisible barcode.

Four, two-dimensional metal barcode

The two-dimensional metal bar code is a high-tech multiple anti-counterfeiting new product made through complex technological processes such as coding technology, laser technology, computer technology, encryption anti-counterfeiting technology and actinic technology. Its multiple anti-counterfeiting functions are shown in: high technology content, manufacturing process Complex; can store a large amount of text, photos, fingerprints; one bar code and one message, endless changes; special encryption technology processing, difficult to decipher; only one-time use, is a national patented technology, the only in the country.

The detection method of the authenticity of the two-dimensional metal barcode: â‘  There is a bumpy feel on the hand, and the appearance has a three-dimensional sense. â‘¡ A special barcode reader can be used. â‘¢ Scan first and then decrypt it with a computer to identify the authenticity. â‘£ Check with a money detector. Two-dimensional metal barcodes also have the advantages of metal barcodes.

5. Implicit magnetic code

The principle of hidden magnetic code is to make powdery weak magnetic material into magnetic ink, and use offset printing, screen printing and other printing methods to convert its mechanical characteristics (such as code bar, code width, code distance) and magnetic characteristics (remaining magnetic ratio, coercion) Force ratio) for hybrid coding duplication. Its characteristic is that the recording material contains trace elements, multi-feature coding, quantitative identification, and low cost.

Types of hidden magnetic codes: (1) magnetic detection barcode; (2) random coding; (3) watermark magnetic code. The watermark magnetic code is in the production process. After demagnetization while wet, the binary interval of the pattern is generated by the computer. After drying, it stays in the magnetic oxide to produce a unique 12-digit number that cannot be changed. A special watermark magnetic verification track is added to judge whether the watermark magnetic number exists and is correct or not to distinguish the authenticity.

Finally, it is reasonable to choose the printing position of the barcode:

Strict implementation of national standards and reasonable determination of the position of the barcode can also achieve the purpose of anti-counterfeiting. For example, canned containers use two barcode printing positions for anti-counterfeiting: (1) The barcode is printed on the longitudinal seam of the label. This method can only Block the road of counterfeiting by purchasing trademarks, and cannot block the road of counterfeiters using old containers for counterfeiting. (2) Comprehensive anti-counterfeiting: After the product is installed, cover it with a lid, and then cover it with a label The seam is sealed, and the label and cover should be firmly bonded. After the barcode is printed across the longitudinal seam of the label, all-round anti-counterfeiting packaging of the barcode printing is completed. This bar code location also blocks the road of trademark counterfeiting. Use the old container to make fake roads. The anti-counterfeiting with barcode printing position should meet the following two conditions: (1) Ensure that the barcode of the old container cannot be used again (2) Ensure that the on-site printing equipment cannot be replaced by other printing at a lower price.

Anti-counterfeiting is imperative, and barcode technology will be more widely used in the tide of commodity economy. Grasping the pulse of the development of barcode technology will undoubtedly make an objective prediction of the future of packaging anti-counterfeiting. Therefore, the development of barcode technology related to anti-counterfeiting packaging technology should arouse the attention of relevant people.

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