ACR3901U-S1 ACS Secure Bluetooth® Contact Card Reader combines the latest technology in the world of smart card readers with Bluetooth® connectivity. This compact and wireless smart card reader brings together sophisticated technology with fresh design to meet different requirements in various smart card based applications using Bluetooth-enabled devices such as smart phones and tablets.

ACR3901U-S1 supports ISO 7816 Class A, B, and C smart cards (5 V, 3 V, and 1.8 V) and most memory cards in the market, including microprocessor cards with T=0 and T=1 protocol. ACR3901U-S1 has both USB Full Speed and Bluetooth 4.0 interface for smart cards. It has a read/write speed of up to 600 Kbps. With its compact design and rechargeable Lithium-ion battery, ACR3901U-S1 is extremely portable and convenient for use anytime, anywhere.

ACR3901U-S1 offers in-field firmware upgrade to help the user cope with the fast-changing technology utilized by different applications. With this feature, stakeholders will be able to save valuable cost and time and provide utmost convenience to users.

ACR3901U-S1 uses Bluetooth® technology that allows easy integration without employing any physical connection to any terminal. Equipped with AES-128 encryption algorithm, it supports devices running on Android™ 4.3 and above, iOS 8.0 and above, Windows®, and Mac OS®.

ACR3901U-S1 is PC/SC and CCID-compliant, making it easy to install and use in any computer-based environment. Its drivers are compatible with the Windows® operating system, Linux®, and Mac OS®.

With its numerous features, the ACR3901U-S1 is the perfect smart card reader for your smart card solution.

Should you wish to try out the demo apps for ACR3901U-S1, please download the app from Google Play and App Store.

Mobile PC-Linked Bluetooth Battery Powered Single Contact Card Slot Firmware Upgradeable
  • Bluetooth® Interface
  • USB Full Speed Interface
  • Power Source
    • Battery-Powered (incorporates a Litium-ion battery rechargeable through Micro-USB port)
    • USB-Powered (through PC-linked mode)
  • CCID Compliance
  • Smart Card Reader:
    • Contact Interface:
      • Supports ISO 7816 Class A, B, and C (5 V, 3 V, 1.8 V) cards
      • Supports microprocessor cards with T=0 or T=1 protocol
      • Supports memory cards
      • Supports PPS (Protocol and Parameters Selection)
      • Features Short-Circuit Protection
      • Supports AES-128 encryption algorithm
  • Built-in Peripheral:
    • Three single-color LEDs
  • Application Programming Interface:
    • Supports PC/SC
    • Supports CT-API (through wrapper on top of PC/SC)
  • USB Firmware Upgradeability
  • Supports Android™ 4.3 and later
  • Supports iOS 8.0 and later
Physical Characteristics
Dimensions (mm) 94.0 mm (L) x 60.0 mm (W) x 12.0 mm (H)
Weight (g) 30.8 g (59.7 g with cable ± 5 g tolerance)
Bluetooth Interface
Protocol Bluetooth® (Bluetooth 4.0)
Power Source Rechargeable Lithium-ion Battery (charging through USB)
Speed 1 Mbps
USB Interface
Protocol USB CCID
Connector Type Micro-USB
Power Source From USB port
Speed USB Full Speed (12 Mbps)
Cable Length 1 m, Detachable
Contact Smart Card Interface
Number of Slots 1 Full-sized Card Slot
Standard ISO 7816 Parts 1-3, Class A, B, C (5 V, 3 V, 1.8 V)
Protocol T=0; T=1; Memory Card Support
Built-in Peripherals
LED 3 single-colors: Red, Blue and Green
Other Features
Encryption In-device AES encryption algorithm
Firmware Upgrade Supported
Certifications/Compliance
Certifications/Compliance EN 60950/IEC 60950
ISO 7816
USB Full Speed
Bluetooth®
EMV Level 1 (Contact)
PC/SC
CCID
VCCI (Japan)
MIC (Japan)
CE
FCC
RoHS 2
REACH
Microsoft® WHQL
Device Driver Operating System Support
Device Driver Operating System Support Windows®
Linux®
MAC OS® 10.7 and later
Android™ 4.3 and later
iOS 8.0 and later
Drivers for ACR3901U-S1
Bluetooth Interface OS Support
MSI Installer for PC/SC Driver  16 MB
Version 2.1.0.0
04-Dec-2018
Windows® 7, Windows® 8, Windows® 8.1, Windows® 10
Android BLE EVK (SmartCardIO)  14 MB
Version 0.5
15-Oct-2019
Android 4.4 and above
*With Extended APDU Support
iOS BLE EVK (SmartCardIO)  15 MB
Version 0.5
15-Oct-2019
iOS 8.0 and above
*With Extended APDU Support
Android BT EVK  9 MB
Version 1.01
30-Apr-2018
Android 4.3 and above
*Without Extended APDU Support
iOS & Mac BT EVK  10 MB
Version 1.01
03-May-2018
iOS 5.0 and above, Mac OS X 10.7 and above
*Without Extended APDU Support
USB Interface OS Support
MSI Installer for PC/SC Driver  6 MB
Version 4.3.2.0
17-Oct-2019
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  1 MB
Version 4.3.2.0
17-Oct-2019
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 Driver Package  3 MB
Version 1.1.7
25-Jul-2019
Linux ®
PC/SC Driver Installer  274 KB
Version 1.1.7
29-Jul-2019
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, Mac 10.15
PC/SC Drivers  458 KB
Version 1.1.7
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  421 KB
Version 1.1.5
25-Jun-2019
Android™ 3.1 and above



Manuals & Datasheets for ACR3901U-S1
Product Presentation

Product Presentation of the ACR3901U-S1 ACS Secure Bluetooth® Contact Card Reader

Technical Specification

Technical Specification of the ACR3901U-S1 ACS Secure Bluetooth® Contact Card Reader

Reference Manual

Reference Manual of the ACR3901U-S1 ACS Secure Bluetooth® Contact Card Reader

User Manual

User Manual of the ACR3901U-S1 ACS Secure Bluetooth® Contact Card Reader

User Guide (iOS)

User Guide for ACS SmartAccess app (iOS)

User Guide (Android)

User Guide for ACS SmartAccess app (Android)