HF | NFC - Reader Module
HF | NFC - RFID Reader HID - OMNIKEY® 3121
■ ISO 7816 & EMVCo Level 1 compliant
■ USB 2.0 CCID plug-and-play support
■ High-speed contact smart card performance
■ Broad multi-OS integration
■ Durable, OEM-optimized board design

Overview
The OMNIKEY® 3121 Reader Board USB from HID Global is a high-performance, compact reader board designed for OEM integration and aimed at manufacturers and system integrators who require a reliable, standards-compliant, and durable solution for secure identity and authentication applications. As an HID embedded RFID reader in the broader sense, the module integrates seamlessly into modern system architectures in which RFID reader modules, NFC reader modules, and contact-based smart card technologies are used in parallel. The reader board complies with all relevant industry standards such as ISO 7816, EMVCo Level 1, and Microsoft WHQL, providing maximum investment protection. Thanks to full USB 2.0 CCID support, true plug-and-play operation is possible without additional drivers, significantly simplifying integration into existing IT infrastructures and reducing development time.
With broad operating system support including Windows, Android, macOS, Linux, and embedded platforms, the OMNIKEY 3121 Reader Board USB is an ideal choice for OEM RFID reader concepts across a wide range of industries. The high data transfer rate ensures fast and stable communication processes, while virtually all contact-based smart cards of classes A, B, and C with 5 V, 3 V, or 1.8 V are reliably supported. In combination with existing HF | NFC RFID architectures, the module can be excellently deployed as an RFID reader module in hybrid solutions, such as terminals, kiosks, or industrial control systems where both classic smart cards and RFID and NFC technologies are used. This positions the OMNIKEY 3121 as a flexible HID RFID reader module for demanding OEM projects.
A particular focus is placed on security and reliability, key criteria for applications such as secure login, digital signatures, financial services, or enterprise authentication. The reader board features intelligent smart card detection functions, including automatic card type detection, short-circuit protection, and automatic shutdown in critical conditions. These features enhance device safety and contribute to the long-term stability of the overall system. With a mechanical design rated for up to 100,000 insertion cycles and an MTBF of approximately 500,000 hours, the module is ideally suited for continuous operation in professional environments. As an OEM RFID reader, the OMNIKEY 3121 therefore impresses not only with its performance but also with its exceptional service life.
From a mechanical and structural perspective, the OMNIKEY® 3121 Reader Board USB is consistently designed to meet OEM requirements. Integrated PCB mounting holes and optional mounting brackets enable simple and secure integration into custom hardware designs. Whether as part of an RFID reader module portfolio, as a complement to NFC reader module solutions, or as a standalone smart card interface, this HID embedded RFID reader board provides a future-proof foundation for scalable security solutions. If you are looking for a professional, robust, and standards-compliant reader solution for your next project, IDCRAFT GmbH offers expert support in selection, integration, and implementation, accompanying you from technical consultation through to successful series deployment.
RFID Reader Module
Applications
■ e-Government
■ e-Healthcare
■ Single Sign On
■ Banking & Digital Signature
■ Enterprise Authentication
■ Secure Workstation Access








