Classic ASP

PC/SC Find Inserted Smart Cards

See more SCard Examples

Get detailed information about each reader including whether or not a smart card is currently inserted in the reader. (Also includes USB tokens.)

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

Classic ASP

<html>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set scard = Server.CreateObject("Chilkat.SCard")

'  First establish a context to the PC/SC Resource Manager
success = scard.EstablishContext("user")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( scard.LastErrorText) & "</pre>"
    Response.End
End If

'  Get JSON containing information about the smartcards currently inserted into readers.
'  This also includes information about USB security tokens.
set json = Server.CreateObject("Chilkat.JsonObject")
success = scard.FindSmartcards(json)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( scard.LastErrorText) & "</pre>"
    Response.End
End If

json.EmitCompact = 0
Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>"

'  Here is sample output:
'  See below for sample code to parse the JSON.

'  You can see which readers have a card inserted by the "state".
'  If the state contains "present", then a card is inserted into the reader.
'  (USB tokens will typically always have a state containing "present")
'  Also, the ATR of the card inserted into the reader is indicated by "atr".

'  {
'    "reader": [
'      {
'        "name": "Alcor Micro USB Smart Card Reader 0",
'        "state": "present,inuse",
'        "vendorName": "Alcor Micro",
'        "systemName": "Alcor Micro USB Smart Card Reader 0",
'        "card": {
'          "atr": "3B7F96000080318065B0855956FB120FFE829000",
'          "windows": {
'            "miniDriver": "AxaltoCM.dll",
'            "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
'            "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
'          }
'        }
'      },
'      {
'        "name": "FS USB Token 0",
'        "state": "present,inuse",
'        "vendorName": "FS",
'        "serialNumber": "3F",
'        "systemName": "FS USB Token 0",
'        "card": {
'          "atr": "3B9F958131FE9F006646530534002571DF000000000012",
'          "windows": {
'            "miniDriver": "eps2003csp11",
'            "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
'            "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
'          }
'        }
'      },
'      {
'        "name": "FT Java Token 0",
'        "state": "present",
'        "vendorName": "FT",
'        "serialNumber": "3F",
'        "systemName": "FT Java Token 0",
'        "card": {
'          "atr": "3BFC180000813180459067464A00642D70C172FEE0FE",
'          "windows": {
'            "miniDriver": "tagliov70px.dll",
'            "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
'            "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
'          }
'        }
'      },
'      {
'        "name": "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0",
'        "state": "present",
'        "vendorName": "SCM Microsystems Inc.",
'        "serialNumber": "333130303330",
'        "systemName": "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0",
'        "card": {
'          "atr": "3BFC180000813180459067464A00641606F2727E00E0",
'          "windows": {
'            "miniDriver": "tagliov70px.dll",
'            "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
'            "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
'          }
'        }
'      },
'      {
'        "name": "Yubico YubiKey OTP+FIDO+CCID 0",
'        "state": "present",
'        "vendorName": "Yubico",
'        "serialNumber": "3F",
'        "systemName": "Yubico YubiKey OTP+FIDO+CCID 0",
'        "card": {
'          "atr": "3BFD1300008131FE158073C021C057597562694B657940",
'          "windows": {
'            "miniDriver": "msclmd.dll",
'            "cryptoProvider": "Microsoft Base Smart Card Crypto Provider",
'            "keyStorageProvider": "Microsoft Smart Card Key Storage Provider"
'          }
'        }
'      }
'    ]
'  }

'  Use this online tool to generate parsing code from sample JSON: 
'  Generate Parsing Code from JSON

i = 0
count_i = json.SizeOfArray("reader")
Do While i < count_i
    json.I = i
    name = json.StringOf("reader[i].name")
    state = json.StringOf("reader[i].state")
    vendorName = json.StringOf("reader[i].vendorName")
    systemName = json.StringOf("reader[i].systemName")
    cardAtr = json.StringOf("reader[i].card.atr")
    cardWindowsMiniDriver = json.StringOf("reader[i].card.windows.miniDriver")
    cardWindowsCryptoProvider = json.StringOf("reader[i].card.windows.cryptoProvider")
    cardWindowsKeyStorageProvider = json.StringOf("reader[i].card.windows.keyStorageProvider")
    serialNumber = json.StringOf("reader[i].serialNumber")
    i = i + 1
Loop

'  Applications should always release the context when finished.
success = scard.ReleaseContext()
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( scard.LastErrorText) & "</pre>"
End If


%>
</body>
</html>