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
MSI Installer for PC/SC Driver  15.43 MB
Windows® 7, Windows® 8, Windows® 8.1, Windows® 10, Windows® 11
iOS BLE EVK (SmartCardIO)  1.06 MB
Version 0.6.0
iOS 9.0 and above
*With Extended APDU Support
Android BLE EVK (SmartCardIO)  1.72 MB
Version 0.6.0
Android 4.4 and above
*With Extended APDU Support
USB Interface OS Support
PC/SC Driver Installer  3.65 MB
PC/SC Driver Package  2.82 MB
Version 1.1.11
PC/SC Driver Installer  278.71 KB
Version 1.1.11
Android EVK  1.58 MB
Version 1.1.7
Android™ 3.1 or above

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)