ACR122U-A9 USB NFC Contactless Smart Card Reader & Writer | 13.56MHz ISO14443 A/B | Multi-OS | Free SDK

Product Overview

The ACR122U-A9 is a PC-linked contactless smart card reader/writer developed based on the 13.56 MHz Radio Frequency Identification (RFID) technology. Compliant with the ISO/IEC 18092 standard for Near Field Communication (NFC), it supports ISO 14443 Type A and B cards, MIFARE, and all four types of NFC tags. It is compatible with multiple operating systems and comes with a free SDK, making it ideal for high-security and contactless interaction scenarios.

Key Features

Interface: USB 2.0 Full Speed

Operating Frequency: 13.56 MHz

Standards Supported: ISO/IEC 18092 (NFC), ISO 14443 A/B, MIFARE

Protocols Supported: Contactless smart cards (ISO 14443 Type A and B, MIFARE, FeliCa)

Operating Systems: Windows, Linux, Mac OS, and other mainstream platforms

Hardware Features: Built-in antenna, CCID compliance, LED indicators, and a buzzer

Performance: Read/write speed up to 424 kbps with robust security support

How to Use

Driver Installation: Connect the reader to your computer via USB; the system will automatically recognize or install the CCID driver.

Software Configuration: Utilize the official SDK or compatible smart card management software for secondary development.

Reading Operation: Place the smart card or NFC tag close to the sensing area; the device will signal a successful read via the LED and buzzer.

Writing Operation: Send commands through the software interface to store data or perform encryption on the tag.

Applications

Payment Systems: Contactless electronic payments and online shopping

Identity Verification: Network logins, access control, attendance systems, and e-government

Data Exchange: NFC smart tag reading and electronic business card exchange

Healthcare: Patient identity verification and electronic medical record management

Public Transportation: Transit card top-ups and ticketing systems

FAQ Q: Does the ACR122U-A9 support all operating systems?

A: It supports Windows, Linux, and Mac OS with plug-and-play capability, requiring no complex driver installation.

Q: Is a Software Development Kit (SDK) provided?

A: Yes, a free SDK containing sample code is available with the product to facilitate secondary development.

Q: What should I do if the device fails to read a card?

A: Confirm that the card is a 13.56 MHz RFID card, check the USB connection, and ensure the card is placed within the device's sensing antenna range.

Product Description

The ACR122U-A9 is a compact and high-performance contactless smart card reader. Its lightweight design makes it easy to deploy for personal identity verification, payment processing, and various NFC interactive scenarios. Adhering strictly to international security standards to ensure stable and secure data transmission, it serves as an ideal hardware solution for developing contactless applications.