射频识别技术(RFID)相对于传统的磁卡及IC卡技术具有非接触、阅读速度快、无磨损等特点。文章详细介绍了射频技术的工作原理、分类、以及相关应用。-Radio Frequency Identification (RFID) technology compared to conventional magnetic and non-contact IC card technology, reading speed, no wear. Article describes in detail the working principle of radio frequency technology, classification, and related applications.