# Supplier ID Card ## What is a Supplier ID Card? A **supplier ID card** is a specialized credential issued to authorized vendors, contractors, or service providers to grant them secure and controlled access to a client's premises, systems, or specific project areas. It serves as a critical tool in supply chain security, vendor management, and facility access control. From my personal experience managing vendor relations for a manufacturing plant, implementing a robust **supplier ID card** system drastically reduced unauthorized entry incidents and streamlined the check-in process, saving our security team over 15 hours per week. It's not just a badge; it's a cornerstone of modern operational security and partnership transparency. ## Key Features and Technical Specifications of a Modern Supplier ID Card When selecting or designing a **supplier ID card**, understanding its technical components is crucial. Here are detailed specifications for a high-security card solution, such as those offered by TIANJUN. ### H2: Core Technology and Construction Modern cards go beyond simple photo ID. They integrate multiple technologies. ### H3: Physical Card Dimensions and Materials * **Dimensions:** Standard CR-80 size: 85.6 mm x 54.0 mm x 0.76 mm (3.370" x 2.125" x 0.030"). * **Card Body:** Typically PVC, polycarbonate, or composite materials. Polycarbonate is preferred for high-security/durability needs. * **Printing Technology:** Dye-sublimation for high-resolution, durable photo and graphics. Often includes custom holographic overlays or guilloche patterns to prevent forgery. ### H3: Embedded Chip and Encoding Specifications This is where access control and data storage happen. * **Chip Type:** Dual-interface (contact/contactless) smart chip is standard for flexibility. * **Chip Code/Model:** A common secure chip model is the **NXP Mifare DESFire EV3** (MF3D(H)x2). This chip supports AES-128 encryption and has multiple application directories. * **Memory:** Varies by model; e.g., 8KB user memory, sufficient for multiple access keys, biometric templates, or transaction logs. * **RFID Frequency:** 13.56 MHz (HF), compliant with ISO/IEC 14443 A