The ACR123U is the USB version of the ACR123S, a cost-effective, flexible and intelligent contactless reader. It can be integrated to existing (Point-of-Sale) terminals or cash registers, to offer the convenience of a cashless payment system. The ACR123U speeds up movement in checkout counters, by enabling customers to complete payments by simply tapping their cards.

The ACR123U is equipped with a large graphical LCD that allows merchants to display messages, as well as a large tapping area with backlight, which guides customers in carrying out their payment transactions. Developed based on 13.56 MHz contactless (RFID) technology, it supports any contactless card following the ISO 14443-4 standard. It is also equipped with a large graphical LCD, as well as a large user-controllable tapping area with backlight.


PC-Linked USB Embedded Operating System Contactless Reader SAM Slot(s) Graphical/ Dot Matrix LCD Firmware Upgradeable
  • USB interface for Data Communication and power supply    
  • ARM 32-bit CortexTM-M3 Processor    
  • Smart Card Reader:    
    • Read/Write speed of up to 848 kbps    
    • Built-in antenna for contactless card access, with card reading distance of up to 50 mm (depending on tag type)    
    • Support for ISO 14443 Part 4 Type A and B cards and MIFARE series
    • Built-in anti-collision feature    
    • Three ISO 7816-compliant SAM slots
  • Built-in Peripherals:    
    • 16 alphanumeric characters x 8 lines Graphical LCD (128 x 64 pixels)    
    • Four user-controllable LEDs (Blue, Yellow, Green, and Red)    
    • User-controllable tapping region backlight (Red, Green and Blue)    
    • User-controllable speaker (Audio tone indication)   
Dimensions Main Body: 159.0 mm (L) x 100.0 mm (W) x 21.0 mm (H)
With Stand: 177.4 mm (L) x 100.0 mm (W) x 94.5 mm (H)
Weight Main Body: 281.0 g
With Stand: 506.0 g
Compliance / Certifications
  • ISO 14443, CE, FCC, RoHS 2, REACH, VCCI, KC
Interface USB Interface with USB Standard Type A connector
Operating Distance Up to 50 mm (depends on the tag type)
Supply Voltage Regulated 5V DC
Supply Current 500 mA (max.)
Operating Temperature 0-50°C
Operating Frequency 13.56 MHz
Smart Card Interface Support
  • ISO 14443 Type A & B
  • MIFARE
Operating System Support
  • Windows®
  • Linux®
Drivers for ACR123U OS Support
USB Interface
MSI Installer for PC/SC Driver  5 MB
Version 4.2.6.1
11-Oct-2017
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  921 KB
Version 4.2.6.0
14-Sep-2017
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 1.1.5
27-Oct-2017
Linux ®
PC/SC Driver Installer  251 KB
Version 1.1.5
23-Oct-2017
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
PC/SC Drivers  455 KB
Version 1.1.5
23-Oct-2017
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  472 KB
Version 1.1.3
31-Mar-2016
Android 3.1 and above



Manuals & Datasheets for ACR123U
Product Presentation

Product Presentation of ACR123U Intelligent Contactless Reader

Technical Specification

Technical Specification of ACR123U Intelligent Contactless Reader

Application Programming Interface

Application Programming Interface of ACR123U Intelligent Contactless Reader