SCardSniffer spies the exchanges between a PC/SC application and PC/SC middleware

SCardSniffer is a new tool used to spy the exchanges between Windows applications and the smart cards or NFC tags that are accessed through a PC/SC reader (or coupler).

SCardSniffer main window

On a Windows computer, all card-aware applications communicate with smart cards or NFC tags through the system's PC/SC library, winscard.dll.

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SpringCard PC/SC SDK VERSION 2016.03

The version 2016.03 of our PC/SC SDK is now available for download:

You can use it with our products in the SpringCard CSB6 Family (CSB6, Prox'N'Roll PC/SC, EasyFinger and CrazyWriter), with our products in the H663 family (Prox'N'Roll HSP PC/SC, CrazyWriter HSP, TwistyWriter HSP, CSB HSP) and our NFC readers/encoders (H512, NFC'Roll).

This SDK is also available on GitHub.

This SDK contains a new version of MemoryCardTool, a new tool called "scriptorxv" and a serie of basic projects for beginners.

PC/SC Driver updated, from Windows XP to Windows 10

We've published a new release of our certified driver for SpringCard PC/SC products.

This new version runs from Windows XP to Windows 10 in 32 and 64 bits.

To download the driver, please go to

The installer contains both x86 and x64 binaries and will automatically select the most suitable for your system.

This release targets all SpringCard USB CCID readers.


New SDK for SpringCard's RDR products

The SDK for our RDR products has just been released. It concerns the following devices:

Complete programs are included : for example, a program that monitors a lits of readers, and talk to each one independantly (to set a buzzer, or a LED).

There are also more basic examples, like a command line application to retrieve the badge numbers, read on a specific reader.

The SDK provides both source code (in C, C# and java) and the compiled binaries.

It is available through a zip file, downloadable from our website. It can also be tracked and cloned from our Github repository.

Contact us for technical information or for commercial requests.


MultiDiag : the all-in-one tool to help SpringCard Support diagnose your configuration


SpringCard Support Team is commited into giving the best support service to our customers. In most situations, the first step to solve an issue or only to answer a particular information request is to collect a few technical data regarding the computer - and to clearly identify the SpringCard devices that are involved.

MultiDiag is a small Windows-based tool that retrieves quickly and easily the technical data we need to help you efficiently.

For instance, if you have a Prox'N'Roll PC/SC or any other reader like a CrazyWriter HSP connected to your PC, MultiDiag shows :

  • the status of the PC/SC Service (ScardService)
  • the status of our PC/SC Driver (sd16055)
  • the reader's serial number and firmware version.

The « copy all to clipboard » button pushes all these information into Windows' clipboard, so you just have to paste it (Ctrl+V shortcut) into an email to forwared it to out Support Team.

We have tested the program on :

  • Windows XP
  • Windows 7
  • Windows 8


Download SpringCard MultiDiag setup here.

Run the setup program with administrative priviledges to install MultiDiag.

After installation, launch the application from Start Menu -> SpringCard -> MultiDiag.


The application displays a single window.

The content of the « General information » and « HID and PC/SC Readers » will be different on your computer.



In the upper right corner you have a button used to copy all system information to the clipboard.
In the top of the screen you have some information about the Scard Service, our PC/SC driver and about your Windows User Account (Control).

The bottom part is used to list the PC/SC and HID readers connected to your PC.
You can double click on each line or click on the « Information » button to get some information about your reader.