RFID ushers in a new era of anti-counterfeiting

RFID: creating a new era of anti-counterfeiting

the rapid development of electronic technology has benefited all walks of life. The technology that people didn't dare to think of in the past has brought us convenience and efficiency. In recent years, RFID electronic tag and its tracking system have entered our life grandly, and have begun to be applied in foreign transportation, logistics and retail industry: in the supermarket, when you choose goods filled with a whole shopping truck and go to the exit of the supermarket, you don't need any bar code scanning. Just push the shopping cart through the RFID code reader in a few seconds, The information of total payment and goods is clearly displayed on the screen

in 2003, Wal Mart, the world's largest retail giant, issued an announcement requiring its 100 suppliers to start using RFID technology in 2005. Since then, this unknown RFID has moved from behind the scenes to the front desk and has become a very hot topic in the past two years. Many people in the industry predict that RFID is likely to replace bar code scanning technology in a few years, bringing revolutionary changes to retail, logistics and even global supply chain management! However, in China, people are not optimistic about the application prospect of China's retail industry. Chinese people are not used to buying in bulk. Coupled with the high price of electronic tags, it is difficult for RFID to make a breakthrough in China's retail industry. However, in the field of anti-counterfeiting identification, RFID can take a step ahead of logistics and retail, and began to enter the stage of practical application and promotion, opening a new chapter in the history of anti-counterfeiting technology. What is RFID

the full name of RFID is radio frequency identification. It is a non-contact automatic identification technology, which automatically identifies the target object and obtains relevant data through RF signals. Since 1999, some of the world's largest electronics manufacturers have been developing and commercializing this technology. If there is no objection, their plan is to use this easy to read chip remotely to replace the widely used bar code. As the basis of high-tech and information standardization for rapid, real-time and accurate information collection and processing, RFID has been recognized as one of the top ten important technologies in this century. It has broad application prospects in various industries such as production, retail, logistics, transportation and so on

RFID principle

1 Tag (radio frequency card): it is composed of coupling elements and chips. The tag contains a built-in antenna for communication with the radio frequency antenna

2. Reader: a device that reads (and can also write) tag information

3. Antenna: transmit RF signal between tag and reader

the basic work flow of the system is: the reader sends a certain frequency RF signal through the transmitting antenna. When the RF card enters the working area of the transmitting antenna, the induced current is generated, and the energy obtained by the RF card is activated; The RF card sends its own coding and other information through the built-in transmitting antenna of the card; The system receiving antenna receives the carrier signal sent from the RF card and transmits it to the reader through the antenna regulator. The reader demodulates and decodes the received signal, and then sends it to the background main system for related processing; The main system judges the legitimacy of the card according to the logical operation, makes corresponding processing and control for different settings, and sends command signals to control the action of the actuator

RFID features

1. Contactless reading

because RFID tags do not need to contact with readers and writers, it not only saves operation time, but also avoids mechanical damage in the operation process and prolongs the service life of tags. In addition, non-contact identification also provides an effective means for commodity anti-theft. In addition, the RF signal can penetrate the non-metallic packaging materials, so the RFID tag can be made on the inner side of the packaging to prevent exposure and tearing. At the same time, the reader can find the hidden goods passing through the reading and writing area

2. Multi target and moving target recognition

RFID tag has strong anti-interference. When multiple RFID tags enter the read-write area at the same time, there will be no data interference. The system can decode 120 tags in one minute. The system can also identify the labels on moving objects, so customers do not need to stay and take out items when passing through the reading and writing area, which greatly improves the work efficiency of the system. At present, the international advanced identification technology can be combined with the laser scanner on the cashier to synchronize the decoding and collection, and distinguish the authenticity at the same time

3. Not affected by the environment

RFID tags can still read and write after the surface is polluted, and are not affected by harsh environments such as high temperature, humidity and heavy pressure. RFID tags have stronger durability

4. Data can be modified

the product information stored in the RFID tag can be modified safely in any link of production and circulation. Therefore, when the sales link changes and the commodity information needs to be modified, there is no need to replace the tag, just modify it. In addition, when the product is updated, as long as the information stored in the chip is modified without adjusting the equipment, the production efficiency is significantly improved

5. Small and light, strong printability

RFID tag chip is very small, with a thickness of no more than 0.35mm and a surface area of 3mm2. It can be printed on paper, plastic, wood, glass, textiles and other packaging materials. 4. It can also be directly made on commodity labels and automatically labeled by automatic labeling machine

RFID anti-counterfeiting advantages

for a long time, forgery has been a headache all over the world. In China, a large number of counterfeit products flood the market. In order to protect the interests of enterprises and consumers and ensure the healthy development of socialist market economy, the state and enterprises spend a lot of human and financial resources on anti-counterfeiting and anti-counterfeiting every year. However, most of the anti-counterfeiting technologies used in the anti-counterfeiting products in the domestic market are still based on paper-based materials. Its technology is not unique and exclusive, easy to copy, so it can not play a real anti-counterfeiting role. Now applied anti-counterfeiting technology, such as holographic anti-counterfeiting technology, is also forged by criminals

at present, there is a trend of using electronic technology to prevent counterfeiting in the field of international anti-counterfeiting, especially the use of RFID tags. Its advantages have attracted extensive attention. The application of RFID in the field of anti-counterfeiting has its own technical advantages. The anti-counterfeiting technology itself requires low cost, but it is difficult to forge. The cost of RF card is relatively cheap, and chip manufacturing requires expensive chip factories, which makes counterfeiters flinch

compared with other anti-counterfeiting technologies such as laser anti-counterfeiting and digital anti-counterfeiting, the anti-counterfeiting advantage of RFID technology is that each tag has a globally unique ID number - uid, which is placed in ROM when making chips and cannot be modified or imitated; No mechanical wear and dirt; The physical interface of the reader is not open to the end user; In terms of data security, in addition to the password protection of the label, some algorithms can be used to realize the security management of the data part; There is a mutual authentication process between the reader and the tag

solutions in the field of RFID anti-counterfeiting

at present, some breakthroughs have been made in the use of RFID technology for anti-counterfeiting applications at home and abroad

1. Document anti-counterfeiting

at present, RFID tags can be embedded in the cover of standard passports or documents in terms of passport anti-counterfeiting and E-wallet. Its chip also provides security functions and supports hardware encryption, which is in line with the international standard of ISO 14443. China has also formed a considerable scale of application in this field, and the promotion and application of second-generation ID card is a typical representative in this regard

2. Ticket anti-counterfeiting

in this regard, some applications urgently need RF to learn about ID technology from Nankai University. For example, in places with a large flow of people such as railway stations, subways and tourist attractions, RFID electronic tickets are used to replace traditional manual tickets to improve efficiency, or RFID technology is used to prevent ticket counterfeiting in occasions with large ticket volume such as competitions and performances. It not only eliminates the need for manual identification and realizes the rapid passage of personnel, but also identifies the number of times tickets are used to prevent tickets from being stolen and handed out for reuse, so as to achieve "number anti-counterfeiting"

3. Packaging anti-counterfeiting

RFID tags use high-tech anti-counterfeiting means, coupled with the high investment in production equipment, it is difficult to be imitated. The purpose of packaging is to protect products and promote sales. RFID tag plays a great role in both aspects, which can effectively protect the interests of enterprises and consumers, and has attracted extensive attention in the packaging industry

establishing strict product sales channels is the key to anti-counterfeiting. Using RFID technology, manufacturers, wholesalers and retailers can use a unique product number to identify the identity of products. In the production process, each product is loaded with a radio frequency card, which records the unique product number. The reader provided by wholesalers and retailers can strictly test the legitimacy of the product

in order to crack down on counterfeiting, the manufacturer of narcotic drug Oxycontin in the United States announced that it would adopt radio frequency technology (RFID) on drug bottles. To realize the whole process electronic monitoring of drugs from production to pharmaceutical factories is an effective means to combat the growing fake phenomenon of drugs with the characteristics of wide sources, rich reserves, renewable materials, recycling or degradation. Drugs, food, dangerous goods and other goods are closely related to the safety of personal daily life and are special goods under the supervision of the state. Its production, transportation and sales process must be strictly managed. Once the management is unfavorable and scattered to the society, it will inevitably bring a great threat to the safety of people's lives and property. Our government has also begun to use RFID technology to meet their needs with the help of domestic leading manufacturers in the field of RFID (such as Weishen Electronics)

RFID brings business opportunities to the printing industry

label is originally a major business branch of the packaging and printing industry. Using RFID tags on packaging is of great significance to protect the interests of enterprises, dealers and consumers, reduce costs and promote sales. Many domestic enterprises have realized the important value of RFID tags and began to produce and use RFID tags. After adopting RFID tag, it is still inseparable from general printing, and there is a new task, that is, printing its antenna with conductive ink instead of copper sheet corrosion method, which is not only high efficiency, but also low cost

visionary ink suppliers, such as flint ink company in the United States, have set up a development department for this business and have cooperated with the automatic identification center (auto) of MIT-