ACR3901T-W1 ACS Secure Bluetooth® SIM-sized Contact Card Reader combines the latest smart card reader technology with Bluetooth® Smart connectivity. With a core based on the ACR3901U-S1, this compact and lightweight smart card reader meets the requirements of various smart card-based applications running on most Bluetooth-enabled devices in the market, such as smart phones and tablets.

ACR3901T-W1 supports ISO 7816 Class A, B, and C SIM-sized 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. ACR3901T-W1 has a read/write speed of up to 600 Kbps and connectivity options for both USB Full Speed and Bluetooth 4.0 Interfaces. With its compact design and rechargeable Lithium-ion battery, ACR3901T-W1 is extremely portable and convenient for use anytime, anywhere.

ACR3901T-W1 also 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. 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®.

ACR3901T-W1 uses Bluetooth® technology that allows easy integration without employing any physical connection to any terminal as well as 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 ACR3901T-W1 is the perfect smart card reader for your smart card solution.

Should you wish to try out the demo apps for ACR3901T-W1, please download the app from Google Play and App Store.

Mobile PC-Linked Standalone USB Bluetooth SIM Card Slot Firmware Upgradeable
  • Bluetooth® Interface       
  • USB 2.0 Full Speed Interface          
  • Power Source:
    • Battery-Powered (incorporates a Lithium-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) SIM-sized 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:         
    • Two LEDs            
    • Button 
  • 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 5.0 and later           
Physical Characteristics
Dimensions (mm) 66 mm (L) x 24 mm (W) x 14 mm (H)
Weight (g) 17 g (30 g with cable ± 5 g tolerance)
Bluetooth Interface
Protocol Bluetooth® (Bluetooth Low Energy / 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 20 cm, Detachable
Contact Smart Card Interface
Number of Slots 1 SIM-sized Card Slot
Standard ISO 7816 Parts 1-4, Class A, B, C (5 V, 3 V, 1.8 V)
Protocol T=0; T=1; Memory Card Support
Built-in Peripherals
Buttons For Device ON/FF; Transaction Approval (depending on software support
LED 1 Bi-color: Green and Blue
1 single-color: Red
Other Features
Encryption In-device AES encryption algorithm
Firmware Upgrade Supported
Certifications/Compliance EN 60950/IEC 60950
ISO 7816
USB Full Speed
Microsoft® WHQL
Device Driver Operating System Support
Device Driver Operating System Support Windows®
MAC OS® 10.7 and later
Android™ 4.3 and later
iOS 8.0 and later
Drivers for ACR3901T-W1
Bluetooth Interface OS Support
iOS BLE EVK (SmartCardIO)  3.11 MB
Version 0.53
iOS 9.0 and above
*With Extended APDU Support
MSI Installer for PC/SC Driver  15.43 MB
Windows® 7, Windows® 8, Windows® 8.1, Windows® 10, Windows® 11
Android BLE EVK (SmartCardIO)  3.65 MB
Version 0.53
Android 4.4 and above
*With Extended APDU Support
USB Interface OS Support
PC/SC Driver Installer  258.98 KB
Mac OS® X 10.6 or above
Android EVK  1.56 MB
Version 1.1.6
Android™ 3.1 and above
PC/SC Driver Package  3.17 MB
Version 1.1.10
Linux ®
Android EVK  1.56 MB
Version 1.1.6
Android™ 3.1 or above
MSI Installer for PC/SC Driver  3.65 MB
Windows 7 x86, Windows 7 x64, Windows 8 x86, Windows 8 x64, Windows 8.1 x86, Windows 8.1 x64, Windows 10 x86, Windows 10 x64, Windows 11 x64, Windows Server 2008 R2 x64, Windows Server 2012 x64, Windows Server 2012 R2 x64, Windows Server 2016 x64, Windows Server 2019 x64, Windows Server 2022 x64
MSI Installer for PC/SC Driver  5 MB
Windows® 7 (for users who did not install required Microsoft Windows Updates and get driver signature error (Code 52))
PC/SC Drivers  458 KB
Version 1.1.8
Linux®, Mac OS® X
CT-API Library  2.04 MB
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, Windows® 11
CT-API Library  261 KB
Version 1.0.1
Linux®, Mac OS® X 10.5, Mac OS® X10.6, Mac OS® X10.7, Mac OS® X10.8, Mac OS® X10.9

Manuals & Datasheets for ACR3901T-W1
Product Presentation

Product Presentation of the ACR3901T-W1 ACS Secure Bluetooth® Contact Card Reader

Technical Specification

Technical Specification of the ACR3901T-W1 ACS Secure Bluetooth® Contact Card Reader

User Manual

User Manual of the ACR3901T-W1 ACS Secure Bluetooth® Contact Card Reader

Reference Manual

Reference Manual of the ACR3901T-W1 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)