HY502 series of RFID reader/writer modules are based on non-contact card reader ASCI chip compatible with ISO14443 standard. It uses 600nm CMOS EEPROM technology, supports ISO14443 typeA protocol, and also supports the MIFARE standard encryption alg
非接触式IC卡是在卡中敷设天线，利用天线的接收发射，与读写器的天线交换信号，实现一种无线通讯，非接触式IC卡又被称为射频卡（RFC——Radio Frequency Card），简称RF卡，非接触式IC卡系统被称为射频识别系统（RFID——Radio Frequency Identification）。
