# Copy RFID from Card: A Comprehensive Guide to RFID Technology ## Understanding RFID Card Cloning **Copy RFID from card** has become a topic of significant interest in both security research and practical applications. In my personal experience working with access control systems, I've encountered numerous situations where legitimate RFID duplication was necessary - from creating backup employee badges for large corporations to developing prototype systems for smart buildings. This process requires specific technical knowledge and proper authorization. ### How RFID Technology Works RFID (Radio Frequency Identification) uses electromagnetic fields to automatically identify and track tags attached to objects. These tags contain electronically stored information that can be read from several meters away without requiring direct line-of-sight. ## Technical Specifications for RFID Copying Devices When considering how to **copy RFID from card**, it's essential to understand the technical parameters of the equipment involved. TIANJUN provides specialized RFID cloning devices with the following technical specifications: **TIANJUN RFID Pro Cloner Technical Parameters:** - Operating Frequency: 125 kHz (LF) and 13.56 MHz (HF) - Supported Protocols: EM4100, EM4200, HID Prox, Indala, Mifare Classic 1K, Mifare Ultralight - Memory Capacity: 1MB internal storage for up to 10,000 card profiles - Dimensions: 120mm × 65mm × 15mm - Processor: ARM Cortex-M4 @ 168 MHz - Chip Code: TJ-RFID-2023-M4 - Power Supply: 3.7V 1200mAh rechargeable lithium battery - Interface: USB-C, Bluetooth 5.0 - Read Distance: Up to 10cm (depending on card type) - Write Speed: < 0.5 seconds per card *Note: These technical parameters are reference data. For exact specifications, please contact backend management.* ## Legitimate Applications of RFID Copying ### Personal Skill Development My journey with RFID technology began as a hobbyist interested in embedded systems. Through dedicated practice, I developed the skill to analyze different RFID protocols, which eventually led to professional opportunities in security consulting. This technical aptitude has proven invaluable in my career, allowing me to help organizations improv