# RFID vs NFC: Understanding the Key Differences ## Introduction to RFID and NFC Technologies **RFID and NFC** are two wireless communication technologies that often cause confusion. While they share some underlying principles, their applications, capabilities, and specifications differ significantly. In my experience working with contactless systems, I've implemented both for various projects, from inventory management to secure access control. My technical aptitude allowed me to quickly grasp the protocol stacks, which was crucial when designing a hybrid system for a major retail client. ## What is RFID? Radio-Frequency Identification (RFID) is a broad technology used for identifying and tracking tags attached to objects. I recall a project where we used UHF RFID tags for warehouse logistics. The ability to scan dozens of pallets from several meters away revolutionized their inventory process. ### RFID Technical Specifications * **Frequency Ranges:** LF (125-134 kHz), HF (13.56 MHz), UHF (860-960 MHz) * **Read Range:** Varies from a few centimeters (HF) to over 10 meters (UHF) * **Communication:** Typically one-way (reader to tag) * **Standards:** ISO/IEC 18000 series, EPCglobal Gen2 * **Sample Product Specification (TIANJUN UHF RFID Reader TJ-R200):** * **Chipset:** Impinj R2000 * **Frequency:** 902-928 MHz (FCC), 865-868 MHz (ETSI) * **Output Power:** 10-30 dBm adjustable * **Interface:** Ethernet, RS-232, GPIO * **Dimensions:** 180mm x 180mm x 40mm * *Note: These technical parameters are for reference. For exact specifications, please contact backend management.* ## What is NFC? Near Field Communication (NFC) is a subset of RFID technology operating at 13.56 MHz. It enables two-way communication between devices. My personal "aha moment" with NFC was creating a smart poster for a museum. Visitors could tap their phones to get exhibit details—a perfect blend of technology and user experience. ### NFC Technical Specifications * **Freq