Driven by the high profits of counterfeit commodities, the phenomenon of counterfeiting and selling counterfeit products in the market has repeatedly been banned, seriously affecting the normal development of the social economy. Although product manufacturers continue to introduce new types of anti-counterfeit packaging to protect their own interests, such as laser trademarks and multiple anti-counterfeit bottle caps, they still cannot effectively stop the emergence of counterfeit products. Analyze the reasons. The common feature of these methods is to increase the complexity of the packaging structure and try to achieve the purpose of anti-counterfeiting by increasing the difficulty of manufacturing. In fact, under the conditions of today's advanced processing technology, no matter how complex the shape is, counterfeiters can easily follow the counterfeit. In order to make the anti-counterfeit packaging of the goods truly play the anti-counterfeiting effect, this article introduces a kind of alcohol anti-counterfeiting packaging that uses modern cryptography theory and computer technology through the method of password exchange authentication. The microcomputer is a key functional device. It uses a 4-bit or 8-bit single-chip computer chip with low power consumption for sleep function; the battery uses a high-capacity lithium battery with low self-discharge rate; the sound circuit uses a piezoelectric chip; the sensor is actually a micro-motion Key; check interface is a pair of metal electrode contacts. The above device is made into a simple circuit with a small volume and encapsulated in a special structure plastic wine bottle cap to form a microcomputer anti-counterfeit packaging bottle cap (hereinafter referred to as an anti-counterfeit cap). The two metal contacts are exposed on the top surface of the bottle cap; the button is installed in the inner cavity of the bottle cap. When the bottle cap is screwed on the bottle 13, the micro button is pressed by the bottle stopper and is in a long-closed state. First, the principle of action 1. The single-chip microcomputer is made of large-scale integrated circuits and has the calculation and control functions of a central processing unit (CPU). The microcomputer in the bottle cap is controlled by the set computer program to realize the complex selection calculation processing of the input password, and a highly confidential rolling password (random code) is generated. 2. The contacts of the same input password and the two anti-counterfeit covers of the same computer program are correspondingly touched, and complex password data will be exchanged between each other instantly to achieve mutual authentication. If the password is correct, the microcomputer issues instructions and controls the sound circuit to issue a set voice prompt . 3. The input password data includes anti-counterfeit data and authentication data. Unscrew the bottle cap, the micro-button is disconnected, the single-chip computer will automatically clear the anti-counterfeiting data, and the anti-counterfeiting effect will disappear. Pressing the button again cannot restore it, but the authentication data part of the anti-counterfeiting cap has not been cleared. To identify anti-counterfeit data. 4. The single-chip computer is usually in a sleep state, and the maintenance current is only 5uA. It is activated and awakened when it is recognized and authenticated. It is in a working state, the working current is 0.5mA, the maintenance time is 15s (set by the computer program), and then it goes to sleep Status, waiting for the next wake-up. 2. How to use 1. The winery can set a binary number within 128 bits, which is controlled by the legal representative or controlled by multiple people at the same time, and the stereotypes are input into the password input device at a time. Before the wine leaves the factory, the operator uses a password input device to inject a password into each bottle through the electrode contacts. 2. When consumers buy wine, they only need to touch the anti-counterfeit cover electrodes of two bottles of wine. If the two make the same sound, they are genuine products; otherwise, they are fake wine. 3. Consumers retain the unscrewed cap after drinking. This cover can be used as a discriminator to verify the authenticity of such wine anytime, anywhere. 3. Performance characteristics 1. Controllability. The anti-counterfeiting password is entered by yourself, and the winery can have absolute control over the key to anti-counterfeiting technology. 2. Openness. The function principle and use method of the anti-counterfeiting cover can be disclosed to the society, and its complicated rolling password and computer program cannot be cracked by others at all. 3. reliability. The materials, components and data used in the anti-counterfeiting cover are safe and reliable, and are not easy to fail or be attacked. 4. One time. Once the anti-counterfeiting cover is unscrewed, there is no anti-counterfeiting effect. It has a one-time anti-counterfeiting feature, and to be used repeatedly, the anti-counterfeiting password must be re-infused by the winery. 5. Convenience. This anti-counterfeiting method is easy to implement when added to the anti-counterfeiting packaging of wine, and the operation method for consumers to verify the authenticity is also very simple. 6. applicability. With the rapid development of chip technology, the current price of some single-chip computers has dropped to less than 4 yuan, making the security cover of the above structure and performance only cost 7 yuan to 8 yuan. It is completely suitable for the application in the anti-counterfeiting packaging of middle and high-end famous wine. The anti-counterfeiting packaging method implemented by microcomputer technology has quite perfect and reliable anti-counterfeiting performance. With the popularization and application of anti-counterfeiting packaging for various products. It will definitely play a positive role in regulating the order of commodity circulation, stabilizing the market prosperity, and promoting the implementation of strategic policies of famous brands. carton sealers are great to have on hand if you need to pack many boxes of different sizes. With intuitive, easy-to-use functions, these box tapers are fast and efficient to help you save time and money. 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