(VB.NET) PC/SC List Smart Card Readers (and USB Tokens)

See more SCard Examples

Demonstrates how to list the smart card readers and USB tokens connected to the computer.

Note: This functionality was introduced in Chilkat v9.5.0.87.

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' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim scard As New Chilkat.SCard

' First establish a context to the PC/SC Resource Manager
Dim success As Boolean = scard.EstablishContext("user")
If (success = False) Then
    Debug.WriteLine(scard.LastErrorText)
    Exit Sub
End If


Dim stReaders As New Chilkat.StringTable
success = scard.ListReaders(stReaders)
If (success = False) Then
    Debug.WriteLine(scard.LastErrorText)
    Exit Sub
End If


Dim numReaders As Integer = stReaders.Count
Dim i As Integer = 0
While i < numReaders
    Debug.WriteLine(i & ": " & stReaders.StringAt(i))
    i = i + 1
End While

' Sample output:
' 0: Alcor Micro USB Smart Card Reader 0
' 1: FS USB Token 0
' 2: FT Java Token 0
' 3: SCM Microsystems Inc. SCR33x USB Smart Card Reader 0
' 4: Yubico YubiKey OTP+FIDO+CCID 0

' Applications should always release the context when finished.
success = scard.ReleaseContext()
If (success = False) Then
    Debug.WriteLine(scard.LastErrorText)
End If