The ACR122U NFC Reader is a PC-linked contactless smart card reader/writer developed based on 13.56 MHz Contactless (RFID) Technology. Compliant with the ISO/IEC18092 standard for Near Field Communication (NFC), it supports not only MIFARE® and ISO 14443 A and B cards, but also all four types of NFC tags.

ACR122U is compliant with both CCID and PC/SC. Thus, it is a plug-and-play USB device allowing interoperability with different devices and applications. With an access speed of up to 424 kbps and a full USB speed of up to 12 Mbps, ACR122U can also read and write more quickly and efficiently. The proximity operating distance of ACR122U is up to 5 cm, depending on the type of contactless tag in use.

In order to increase the security level, ACR122U can be integrated with an ISO 7816-3 SAM slot. Furthermore, the ACR122U NFC Reader is available in module form, permitting easy integration into bigger machines, such as POS terminals, physical access systems and vending machines.

The ACR122U NFC Reader is ideal for both secure personal identity verification and online micro-payment transactions. Other applications of the ACR122U include access control, e-payment, e-ticketing for events and mass transit, toll road fare collection and network authentication.

The ACR122U comes with an optional stand to hold the smart card reader at an optimal angle, so that users can tap contactless cards or NFC-enabled devices onto the ACR122U with ease. For more information, click here to download the brochure of this special accessory.

The ACR122U USB NFC Reader has been counterfeited by certain law-breaking parties. We issue the following declaration to inform our stakeholders of how we are addressing this issue, and to inform customers on how they can protect themselves against illegal products. For more information, please click here.

STD019_ACR122

PC-Linked USB Contactless Reader NFC Reader
  • USB 2.0 Full Speed Interface
  • CCID Compliance
  • Smart Card Reader:
    • Read/write speed up to 424 kbps
    • Built-in antenna for contactless tag access, with card reading distance of up to 50 mm (depending on tag type)
    • Supports ISO 14443 Type A and B cards, MIFARE, FeliCa, and all 4 types of NFC (ISO/IEC 18092) tags
    • Built-in anti-collision feature (only 1 tag is accessed at any time)
  • Application Programming Interface:
    • Supports PC/SC
    • Supports CT-API (through wrapper on top of PC/SC)
  • Peripherals:
    • User-controllable bi-color LED
    • User-controllable buzzer
  • Supports Android™ OS 3.1 and above
Physical Characteristics
Weight (g) 70 g
Dimensions (mm) 98.0 mm (L) x 65.0 mm (W) x 12.8 mm (H)
USB Interface
Power Source From USB port
Protocol USB CCID
Speed USB Full Speed (12 Mbps)
Connector Type Standard Type A
Cable Length 1.0 m, Fixed
Contactless Smart Card Interface
Protocol ISO 14443-4 Compliant Card, T=CL 
MIFARE® Classic Card, T=CL 
ISO18092, NFC Tags 
FeliCa
Standard ISO/IEC 18092 NFC, ISO 14443 Type A & B, MIFARE®, FeliCa
Built-in Peripherals
LED 1 bi-color: Red and Green
Buzzer Monotone
Certifications/Compliance
Certifications/Compliance EN 60950/IEC 60950
ISO 18092
ISO 14443
USB Full Speed
PC/SC
CCID
VCCI (Japan)
KC (Korea)
Microsoft® WHQL
CE
FCC
RoHS 2
REACH
Device Driver Operating System Support
Device Driver Operating System Support Windows® CE
Windows®
Linux®
MAC OS®
Solaris
Android™
Drivers for ACR122U
USB Interface OS Support
MSI Installer for PC/SC Driver  5 MB
Version 4.2.8.0
20-Mar-2018
Windows® XP, Windows® Vista, Windows® 7, Windows® 8, Windows® 8.1, Windows® 10, Windows® Server 2003, Windows® Server 2008, Windows® Server 2008 R2, Windows® Server 2012, Windows® Server 2012 R2, Windows® Server 2016 R2
MSI Installer for PC/SC Driver  5 MB
Version 4.0.6.0
14-Nov-2014
Windows® 7 (for users who did not install required Microsoft Windows Updates and get driver signature error (Code 52))
PC/SC Drivers  956 KB
Version 4.2.8.0
20-Mar-2018
Windows® XP, Windows® Vista, Windows® 7, Windows® 8, Windows® 8.1, Windows® 10, Windows® Server 2003, Windows® Server 2008, Windows® Server 2008 R2, Windows® Server 2012, Windows® Server 2012 R2, Windows® Server 2016 R2
PC/SC Drivers  371 KB
Version 2.0.1.0
23-Nov-2015
Windows® CE 5.0, Windows® CE 6.0, Windows® CE 7.0
PC/SC Driver Package  2 MB
Version 1.1.6
30-Oct-2018
Linux ®
PC/SC Driver Installer  256 KB
Version 1.1.6
29-Oct-2018
Mac 10.5, Mac 10.6, Mac 10.7, Mac 10.8, Mac 10.9, Mac 10.10, Mac 10.11, Mac 10.12. Mac 10.13, Mac 10.14
PC/SC Drivers  457 KB
Version 1.1.6
29-Oct-2018
Linux®, Mac OS® X
CT-API Library  2 MB
Version 1.0.1.1
23-Jan-2017
Windows® XP, Windows® Server 2003, Windows® Vista, Windows® Server 2008, Windows® Server 2008 R2, Windows® 7, Windows® 8, Windows 8.1, Windows® Server 2012, Windows® Server 2012 R2, Windows® 10
CT-API Library  261 KB
Version 1.0.1
23-Jan-2017
Linux®, Mac OS® X 10.5, Mac OS® X10.6, Mac OS® X10.7, Mac OS® X10.8, Mac OS® X10.9
Android EVK  424 KB
Version 1.1.4
19-Jan-2018
Android 3.1 and above



Manuals & Datasheets for ACR122U
Product Presentation

Product Presentation of ACR122U NFC Contactless Smart Card Reader

Technical Specification

Technical Specification of ACR122U NFC Contactless Smart Card Reader

Application Programming Interface

API Driver Manual of ACR122U NFC Contactless Smart Card Reader