# NFC ID Cards ## What Are NFC ID Cards? **NFC ID cards** are modern identification credentials that utilize Near Field Communication (NFC) technology. These cards contain a small embedded chip and antenna, allowing them to communicate wirelessly with compatible readers over a very short distance—typically a few centimeters. Unlike traditional magnetic stripe or barcode cards, **NFC ID cards** enable secure, contactless data exchange, making them ideal for access control, employee identification, payment systems, and more. From my personal experience working in corporate security, transitioning from traditional photo ID badges to **NFC ID cards** was a game-changer. I recall the frustration of employees constantly swiping and re-swiping magnetic stripe cards at turnstiles, especially during rush hour. The shift to a simple tap with an **NFC ID card** not only sped up entry dramatically but also significantly reduced wear and tear on the cards and readers. My personal view is that this technology represents the baseline standard for modern, efficient identity management, and any organization not considering it is likely falling behind in both security and operational smoothness. ## Technical Specifications and Parameters of NFC ID Cards When procuring **NFC ID cards**, understanding the technical specifications is crucial. Here are detailed parameters for a typical high-frequency (HF) NFC card, commonly used for ID applications. **Chip Specifications:** * **Chip Type:** NXP NTAG 216 * **Operating Frequency:** 13.56 MHz (ISO/IEEE 14443 Type A standard) * **Memory:** 888 bytes of user memory, organized into 222 pages. * **Data Retention:** Up to 10 years. * **Write Endurance:** 100,000 cycles. * **Unique Identifier (UID):** 7-byte serial number, factory-locked and unique for each chip. * **Communication Interface:** ISO/IEEE 14443 A * **Data Transfer Rate:** Up to 424 kbit/s **Card Physical Specifications:** * **Standard Dimensions:** ID-1 format (ISO/IEEE 7810), 85.6 mm × 54.0 mm × 0.