RS40N-3 (MDR104) 4-Port Smart-Card Reader

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System Diagram

HSL secure multi-domain smartcard reader (MDR) enables the use of one smartcard to logon to four computers simultaneously.

Designed specifically to answer the need for secure simultaneous smartcard access the MDR allows reducing the overall smartcard operational and administrative costs while increasing security. 

  • Reduce overall smartcard operational costs, buy less smartcards and less readers.
  • Minimize smartcard administrative overhead. Use a single smartcard for multiple computers.
  • Increase security by simultaneously auto-logoff/lock all computers the user is working on upon smartcard removal.

In organizations where users simultaneously work on multiple computer
environments, the use of smartcards to secure logons and applications (such
as email encryption) generates a costly and administrative-intensive overhead.

Due to the fact that a dedicated smartcard and smartcard reader have to be
purchased, programmed and installed on both per user and computer bases
multiplied by the number of computers and users in the organization, the TCO
and administrative effort required to support such environments is extremely high.

For example, an employee that has to access 4 computers simultaneously would
need to have 4 smartcards, one for every computer environment plus 4
smartcard readers, each reader connected to a separate computer.

HSL developed the secure Multi-Domain smartcard Reader (MDR) technology to
provide a simple and yet secure solution to this common problem.
The HSL Multi-Domain smartcard Reader (MDR) is a single secure smartcard
reader which connects simultaneously to multiple computers thus allowing a
user to utilize a single smartcard while working securely on multiple computer
environments at the same time.

Removing the smartcard from the MDR immediately de-associates the MDR
from all coupled PCs. As a result, smartcard-aware applications will notice the
smartcard absence and respond accordingly.

For example, a Windows PC that is configured to require smartcards for user
logon may be set to lock the user’s desktop once the smartcard is removed.

How does it work?

  • Program the smartcard with the credentials needed for all four computer environments.
  • Connect the MDR USB cables to the computers. Cable numbers correspond to the numbered MDR buttons.
  • Insert your smartcard into the MDR reader socket to associate it with both PCs.
  • The smartcard appears simultaneously on both PCs and is ready for use.
  • Smartcard removal, is simultaneously noticed by all coupled PCs and triggers the default removal behavior (Lock/Logoff/Other) as defined by each system’s administrator.

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  • Unique in the market:
    The only smartcard reader available today that can interface with multiple isolated computers.

  • Standard smartcard reader chips (from Identive, formally SCM). No additional smartcard reader drivers are needed: 
    100% compatibility to existing and future cards, OSs and applications.
    Uses standard USB CCID drivers which are built into common computer operating systems.
  • Transparent to all participating PCs:
    PCs are unaware of their peers and can work seamlessly with the smartcard.
  • Card removal de-associates the MDR from all PCs:
    Once the card is removed, all sessions are terminated at once.
  • Safe and Secure:
    No card or user data is accessible to the MDR. No data can pass between coupled PCs. MDR has anti-tampering protection.
  • Reduce overall smartcard operational and administrative costs without any security compromise:
    Buy less smartcards and less readers.
  • Ease of use, manual / auto-detective association modes::
    Support both manual and on-demand automatic smartcard association with either one of the PCs.

  • Active anti tampering: 
    Always-on active anti-tampering with 10 years battery life cycle. Special holographic tampering evident labels.

  • Tamper Evident Label:
    Providing clear visual indication of product was tampered or opened in any way.

  • Highest security by design:
    The only smart-card reader that designed from early stages to support high security isolation applications.


RS40N-3 (MDR104)

No. of Computers


MDR Ports

4  x USB Type-A to connect to computers,
1m long cable for each

1 x DC Power supply jack

Controls and indications

4 x Blue LEDs to indicate active channel

4 x Red LEDs to indicate  tampering attempt or failure to read card

Sound transducer to provide user warnings
(65dB maximum)

Smart-Card Reader Characteristics

Supports ISO7816 Class A and AB Smartcards

T=1, T=0 protocol support

Communication speed up to 344,105 bps (PPS, FI parameter)

Frequency up to 12 MHz (PPS, DI parameter)

Connector with sliding 8-contacts designed for 150,000 insertions

Driver and OS Compatibility

CCID compliant & PC/SC Compatible Reader

Supports All Operating Systems: Windows® OS, XP version and above, Linux, Mac OS

Security Features

No shared circuitry across channels other than the user card. Each channel uses its own card reader circuitry

Power sub-system is divided and fully protected from power signaling attacks

Secure card removal massaging function with backup circuitry

Audible warning if card is inserted and no active session available for more than 60 seconds

Audible warning if card is partially inserted for more than 15 seconds

Audible and visible indications if device was tampered

Advanced active anti-tampering system with back-up battery to detect physical intrusion attempts

Permanently disables the device if tampering detected, erases keys and log events in crypto memory

Holographic Tampering-Evident Labels to detect enclosure tampering

Sealed plastic design to prevent physical tampering

Computer Ports

USB Type B ports


175 (W) x 60 (D) x 33 (H) mm / 7 (W) x 2.5 (D) x 1.34 (H) inches


0.5 Kg (1.1 lbs.)


Wall-mounted power supply 12VDC, 5W maximum

Power Type


Operating Temperature

- 0ºC to 40ºC (32ºF to 104ºF)

Storage Temperature

-20ºC to 60ºC (-4ºF to 140ºF)


Operating - 20 to 80% non-condensing; Storage – 10 to 90% non-condensing


0 to 10,000 ft


CE, UL and cUL, Safety BSEN60950 / EN60950

Product life-cycle

10 years


2 Years

MDR104 - 4-port Multi-Domain smart-card reader, USB out


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