RFID absorber, also known as electronic tag, is a non-contact automatic identification technology. It identifies a specific target through radio signals and reads and writes related data without the need for the identification system to have mechanical or optical contact with the target. It does not require manual intervention, can be used in various harsh environments, can identify high-speed moving objects, can identify multiple tags at the same time, and is fast and convenient to operate. The second-generation ID cards and Olympic tickets have built-in RFID chips, and the ETC electronic non-stop toll collection system on the highway also uses RFID technology.
The RFID&SIM card launched by China Mobile is similar to the bus card in Beijing and other places. It records the balance of the mobile wallet through the internal integrated RFID chip and exchanges the data of consumption by swiping the card. The merchant’s mobile payment POS machine is the reader, and the RFID absorber chip of the consumer’s mobile phone is the label. In fact, the bus card also has a built-in RFID chip, and the difference is that the mobile wallet can realize wireless recharge and remote settlement through the cooperation between mobile operators and banks, so that all the process from recharge to consumption can be done through a mobile phone. Finish.
In fact, through the RFID absorber mobile phone, the mobile operator has played the role of a consumer payment platform. However, the popularity and ease of use of mobile phones far exceed that of computers, and coupled with the large-scale user base, once mobile payment becomes mature like Japan and South Korea, the huge capital precipitation benefits and fee income of operators can be imagined. Operators use mobile phones as a carrier to directly access users to the e-commerce market and complete various functions of e-commerce.
Carry a mobile phone with an RFID SIM card, go to Starbucks or McDonald’s to “swipe” the machine to buy breakfast, then use the mobile phone to take the subway. After arriving at the Expo site, swipe the mobile phone to verify the electronic ticket. If you are thirsty when visiting the venue, you can also Swipe your mobile phone on the automatic shopping machine to buy drinks and water. This is mobile payment. The mobile phone card has been integrated with bus card, supermarket card and even bank card. And this is just a basic application of RFID, RFID absorber will support the rise of the entire Internet of Things industry. A complete and secure RFID-based GPRS mobile payment system is composed of five parts: mobile terminal, communication network, mobile security transaction system, bank (or application service provider) and certification center (CA).
The mobile terminal includes an RFID absorber tag, a mobile phone that can run JAVA mobile payment software, and a POS machine that can read RFID. Among them, the RFID card and the RFID POS machine belong to the RFID subsystem. RFID POS machine reads user information through RFID technology, and uses PSTN, GPRS and other methods to connect with mobile payment platform. Mobile phone users use JAVA mobile mobile payment software to exchange information with mobile payment platform through GPRS network to complete payment.
The RFID subsystem consists of RFID tags, RFID readers and RFID application support software systems. The RFID tags held by each user are divided into master tags and slave tags. The main label is pasted inside the mobile phone shell, and the appearance of the secondary label is the same as that of the ordinary magnetic card, which is used in the environment where the mobile phone is not suitable. Since there is no online support for mobile phones, the types of services supported by the slave tag are less than that of the main tag, mainly some small offline payment services. According to the characteristics of the mobile payment service, the storage space in the RFID absorber tag can be divided into: application identification directory area, distribution area, user personal information area, mobile payment service area and other service application reserved data areas. The data in the application identification directory area mainly includes: the serial number of the chip, the national registration number of the card issuer’s IC card issuance right, the national registration number of the IC card application provided by the card issuer, and the read and write permissions.
The potential of the RFID absorber market is undoubtedly huge. However, it is precisely because of the technology industry of RFID that is driven by technology. It has to be said that there are still many technical obstacles that are difficult to overcome in today’s RFID, which is also an important obstacle to the further expansion of the market. reason.
Currently, one material used to solve the interference problem is magnetic material. Generally speaking, magnetic materials are divided into permanent magnetic materials (HC>1000A/m) and soft magnetic materials (HC<100A/m), and NFC/RFID absorbers are designed with soft magnetic materials, that is, antimagnetic sheets.
What does the anti-magnetic sheet do? When the NFC/RFID absorber is working, the magnetic field formed by the antenna is easily interfered by objects such as metals, resulting in unnecessary errors in device identification, and the use of anti-magnetic sheets can well eliminate such errors. For example, the RFID antenna is generally placed between the back cover of the mobile phone and the battery, and the battery easily interferes with the magnetic field. At this time, we only need to put a layer of anti-magnetic sheet between the antenna and the battery to eliminate the adverse effects of this interference. And ferrites and antimagnetic sheets also have a lot of applications in wireless charging and EMI.
Shenzhen PH Functional Materials is a professional manufacturer of wave absorbers, EMI suppression sheet, sintered ferrite sheets, and electromagnetic shielding coatings. We have 11 years of industry experience and our products are sold all over the world. Professional quality you can trust. If you want to know more about our products, please contact us.
