(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.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.SCard")
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.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.JsonObject")
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>