The ACR1251U USB NFC Reader II offers advanced features such as firmware upgradeability, a SAM (Secure Access Module) slot, and support for NFC tags and devices. It is ideal for contactless applications with added security functions. Through the SAM, key diversification and mutual authentication are made possible, restricting the exposure of keys and limiting the possibility of keys being stolen. This provides a high level of security in contactless operations.

ACR1251U is suitable for any contactless smart card application such as personal identity verification, network login, online banking, and micropayment. With its enhanced NFC features, ACR1251U is also ideal for non-conventional NFC applications. Such applications include smart posters for advertising, marketing, and communication purposes.

Furthermore, ACR1251U is PC/SC-compliant, allowing interoperability across different applications and platforms. ACR1251U also supports remote post-deployment firmware update, which eliminates the need for additional hardware modification. With its compact size, trendy design and rich features, ACR1251U enables you to fully enjoy the convenience of using NFC applications.

The ACR1251U 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 ACR1251U with ease.

For more information, click here to download the brochure of this special accessory.

ACR1251U_Leftwithstand_1500x1500-web

  • USB 2.0 Full Speed Interface    
  • CCID Compliance    
  • USB Firmware Upgradability    
  • Smart Card Reader:    
    • Read/Write speed of 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
    • Supports MIFARE 7-byte UID, MIFARE Plus and MIFARE DESFire
    • Built-in anti-collision feature (only one tag is accessed at any time)  
    • One ISO 7816-compliant SAM slot
  • Application Programming Interface    
    • Supports PC/SC    
    • Supports CT-API (through wrapper on top of PC/SC)    
  • Built-in Peripherals:    
    • User-controllable bi-color LED    
    • User-controllable buzzer    
    • SAM Slot   
  • e-Government
  • Banking & Payment
  • e-Healthcare
  • Network Security
  • Access Control
  • e-Purse & Loyalty
  • Transportation
  • Smart Poster
Dimensions 98.0 mm (L) x 65.0 mm (W) x 12.8 mm (H)
Weight 81.0g
Interface USB Full Speed
Operating Distance Up to 50 mm (depends on the tag type)
Supply Voltage Regulated 5V DC
Supply Current 200mA (operating)
Operating Temperature 0-50°C
Operating Frequency 13.56 MHz
Smart Card Interface Support
  • ISO14443 Type A & B
  • MIFARE
  • FeliCa
  • 4 types of NFC (ISO/IEC18092) tags
Compliance / Certifications
  • ISO 18092, ISO 14443, ISO 7816, PC/SC, CCID, LASCOM, EN60950/IEC 60950, CE, FCC, VCCI, MIC, KC, RoHS 2, USB Full Speed, Microsoft® WHQL
Operating System Support
  • Windows®
  • Linux®
  • Mac OS®
  • Android™ 3.1 and above

Drivers for ACR1251

Release Date Drivers OS Support Version File Size Notes
USB Interface
24-Aug-2015 MSI Installer for PC/SC Driver (32-bit) Win 2000, Win XP, Win Vista, Win 7, Win 8, Win 8.1, Win10 , Win Server 2003, Server 2003 R2, Win Server 2008 4.0.7.1 3 MB
24-Aug-2015 MSI Installer for PC/SC Driver (64-bit) Win XP x64, Win Vista x64, Win 7 x64, Win 8 x64, Win 8.1 x64, Win10 x64, Win Server 2003 x64, Win Server 2003 R2 x64, Win Server 2008 x64, Win Server 2008 R2 x64, Win Server 2012 x64, Win 2012 R2 x64 4.0.7.1 2 MB
20-Aug-2015 PC/SC Drivers Win 2000, Win XP, Win XP x64, Win Vista, Win Vista x64, Win 7, Win 7 x64, Win 8, Win 8 x64, Win 8.1, Win 8.1 x64, Win 10, Win 10 x64,Win Server 2003, Win Server 2003 x64, Win Server 2003 R2, Win Server 2003 R2 x64, Win Server 2008, Win Server 2008 x64, Win Server 2008 R2 x64, Win Server 2012 x64, Win Server 2012 R2 x64 4.0.0.7 842 KB
23-Nov-2015 PC/SC Drivers Win CE 5.0 2.0.1.0 62 KB
23-Nov-2015 PC/SC Drivers Win CE 6.0 2.0.1.0 105 KB
23-Nov-2015 PC/SC Drivers Win CE 7.0 2.0.1.0 196 KB
18-Feb-2016 PC/SC Drivers Linux, Mac 10.5, Mac 10.6, Mac 10.7, Mac 10.8, Mac 10.9, Mac 10.10, Mac 10.11 1.1.2 434 KB
19-Feb-2016 PC/SC Driver Package Linux 1.1.2 2 MB
18-Feb-2016 PC/SC Driver Installer Mac 10.5, Mac 10.6, Mac 10.7, Mac 10.8, Mac 10.9, Mac 10.10, Mac 10.11 1.1.2 248 KB
12-Sep-2011 CT-API Library Win 2000, Win XP, Win XP x64, Win Vista, Win Vista x64, Win 7, Win 7 x64, Win 8, Win 8 x64, Win Server 2003, Win Server 2003 x64, Win Server 2003 R2, Win Server 2003 R2 x64, Win Server 2008, Win Server 2008 x64, Win Server 2008 R2 x64, Win Server 2012 x64 1.0.0.1 2 MB
12-Sep-2011 CT-API Library Linux 1.0.0 62 KB
12-Sep-2011 CT-API Library Mac 10.5, Mac 10.6, Mac 10.7, Mac 10.8, Mac 10.9 1.0.0 35 KB
31-Mar-2016 Android EVK Android 3.1 and above 1.1.3 472 KB

Manuals / Datasheets for ACR1251

Product Presentation

Product Presentation of ACR1251 USB NFC Reader II

Technical Specification

Technical Specification of ACR1251 USB NFC Reader II

Application Programming Interface

Application Programming Interface of ACR1251 USB NFC Reader II