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PrehKeyTec ML4 Multi-function Reader

ML-4 contact/contactless (RFID/NFC) and biometric data capture input device
With shipment Local Pickup for $ 0.00

The ML-4 range of input modules offer a combination of data input and capture technologies, from contact, contactless (RFID/NFC) and biometric data capture, all in one small highly configurable module. System builders can now seamlessly add additional authentication methods, saving costs and providing increased levels of security and data capture. 

The ML 4 is ideal for a range of environments, such as retail, aviation, hotel, government, corporate and banking applications. Capturing data from users and customers becomes a simple and fast process, improving both, the user experience and the integrity of system data capture.

Smart card readers and biometric fingerprint readers both eliminate and reduce costs associated with forgotten passwords and password resets. This greatly reduces fraud from co-worker false log on and helps with regularity compliance, financial regulations and audit trails.


  • Integrated robust readers providing a small footprint
  • Combines contact, contactless and biometric technologies
  • Supports major cards and standards
  • ePassport reading
  • Micro-USB interface
  • Also available as a RFID/NFC only version 
ML 4 Standalone Modul: RFID/NFC und Fingerprint
ML 4 Standalone Modul: RFID/NFC und Fingerprint
ML 4 Standalone Modul: RFID/NFC und Fingerprint
ML 4 Standalone Modul: RFID/NFC und Fingerprint


Technical Data


USB Voltage 5 V± 5%
USB Current < 500 mA
Operating System Windows 7 or newer, others on request

Contact Smart Card Interface

Standards & Protocols ISO 7816 Class A/B/C; T=0, T=1, S=8, S=9, S=10 (I²C, 2WBP, 3WBP)
Card Size ID-1 (full-size)
Smart Card Interface Speed 420 kbps (when supported by card)
Supported Card Types 5 V, 3 V and 1.8 V smart cards, ISO 7816 Class A, AB and C
Power to Smart Card 60 mA
8 Pin Handling C4/C8
Supported APIs PC/SC-API, CT-API (on top of PC/SC), OCF (on top of PC/SC)
Status Indicator Bi-color LED
Durability 100,000 insert cycles
Driver CCID native driver from operating system (Windows/Linux/Mac)

Contactless Smart Card Interface

Standards & Protocols T=CL, MIFARE®, iCLASS®, ISO 14443A/B - up to 848 kbps (depending on card), iCLASS 15693 up to 26 kbps (depending on card), NFC Tag 1,2,4
Operating Frequency 13.56 MHz

Optical Fingerprint Reader

Pixel Resolution 512 dpi
Scan Capture Area 14.6 mm (width at center) 18.1 mm (length)
Color 8-bit grayscale (256 levels of gray)
Indicator LED Blue LED