Visual Basic 6.0

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.

Visual Basic 6.0

Dim success As Long
success = 0

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

Dim scard As New ChilkatSCard

' First establish a context to the PC/SC Resource Manager
success = scard.EstablishContext("user")
If (success = 0) Then
    Debug.Print scard.LastErrorText
    Exit Sub
End If

Dim stReaders As New ChilkatStringTable
success = scard.ListReaders(stReaders)
If (success = 0) Then
    Debug.Print scard.LastErrorText
    Exit Sub
End If

Dim numReaders As Long
numReaders = stReaders.Count
Dim i As Long
i = 0
Do While i < numReaders
    Debug.Print i & ": " & stReaders.StringAt(i)
    i = i + 1
Loop

' 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 = 0) Then
    Debug.Print scard.LastErrorText
End If