RC522 module is a reader module based on RF technology, usually used for smart cards, IC cards, access control systems, consumer systems and other various occasions that require authentication and identification. The module uses a high-speed communication interface, read and write speed is very fast, but also has a variety of security measures. Due to its small size, low power consumption, easy to use and other advantages, has been widely used in a variety of intelligent products.
The working principle of RC522 module is based on ISO/IEC14443A/MIFARE protocol, and its RF communication frequency is 156MHz. when working, the module needs to communicate with the card reader, and realize various functions such as reading and writing data, encrypting and decrypting, and verifying the identity, etc. by sending different commands. In addition, the RC522 module also has certain anti-counterfeiting measures, which can effectively prevent the use of illegal cards or counterfeit cards.
The RC522 module has a wide range of applications, mainly used in smart cards, access control systems, consumer systems, medical equipment and other fields. Among them, smart cards are mainly used in the fields of electronic wallets, social security cards, medical insurance cards, education control cards and so on. Access control systems are mainly used in enterprises, schools, hospitals, office buildings and other occasions for security protection. Consumption system is mainly used in supermarkets, shopping malls, restaurants, kiosks and other occasions to realize automated settlement. For medical equipment, RC522 modules are also widely used in hospital equipment, health insurance smart cards, identity verification, etc. to provide more secure and convenient services.