# Mifare NFC Cards: The Complete Guide to Technology and Applications ## What Are Mifare NFC Cards? **Mifare NFC cards** represent one of the most widely deployed contactless smart card technologies globally. As a personal experience, I first encountered **Mifare NFC cards** during my university years when our student ID cards transitioned from magnetic stripes to these versatile contactless cards. This shift not only simplified access to buildings and libraries but also opened my eyes to the potential of near-field communication technology in everyday life. ## Technical Specifications of Mifare NFC Cards ### Mifare Classic 1K (MF1S50) - **Chip Code**: NXP MF1S503x - **Memory Capacity**: 1KB EEPROM - **Communication Frequency**: 13.56 MHz - **Data Transfer Rate**: 106 kbit/s - **Dimensions**: Standard ISO/IEC 7810 ID-1 format (85.6mm × 54mm × 0.76mm) - **Sector Structure**: 16 sectors with 4 blocks each (64 blocks total) - **Security**: CRYPTO1 stream cipher (note: vulnerabilities discovered) - **Operating Distance**: Up to 10cm (typically 0-4cm in practice) ### Mifare Classic 4K (MF1S70) - **Chip Code**: NXP MF1S703x - **Memory Capacity**: 4KB EEPROM - **Communication Frequency**: 13.56 MHz - **Sector Structure**: 40 sectors (32 sectors with 4 blocks, 8 sectors with 16 blocks) - **Dimensions**: Standard ISO/IEC 7810 ID-1 format ### Mifare Plus (MF1PLUS) - **Security Enhancement**: AES-128 encryption - **Memory Options**: 2KB or 4KB EEPROM - **Backward Compatibility**: With Mifare Classic infrastructure - **Certification**: Common Criteria EAL4+ certified ### Mifare DESFire EV2 (MF3D(H)x2) - **Chip Code**: NXP MF3DHx2 - **Security**: AES-128, 3DES, or DES encryption options - **Memory Options**: 2KB, 4KB, or 8KB EEPROM - **Communication**: ISO/IEC 14443A compliant - **Data Transfer**: Up to 848 kbit/s - **Applications**: Multiple independent applications supported *Important Note: These technical parameters are reference data. For specific implementation requirements, please contact our backend management team.* ## Personal Skills Development with Mifare Technology My journey with **Mifare NFC cards** evolved from basic user to developer when I discovered my aptitude for programming embedded systems. I developed a personal project that used **Mifare NFC cards** as digital business cards—when tapped against a ph