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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.

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Local $bSuccess = False

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

$oScard = ObjCreate("Chilkat.SCard")

; First establish a context to the PC/SC Resource Manager
$bSuccess = $oScard.EstablishContext("user")
If ($bSuccess = False) Then
    ConsoleWrite($oScard.LastErrorText & @CRLF)
    Exit
EndIf

; Get JSON containing information about the smartcards currently inserted into readers.
; This also includes information about USB security tokens.
$oJson = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oScard.FindSmartcards($oJson)
If ($bSuccess = False) Then
    ConsoleWrite($oScard.LastErrorText & @CRLF)
    Exit
EndIf

$oJson.EmitCompact = False
ConsoleWrite($oJson.Emit() & @CRLF)

; 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

Local $sName
Local $state
Local $sVendorName
Local $systemName
Local $sCardAtr
Local $sCardWindowsMiniDriver
Local $sCardWindowsCryptoProvider
Local $sCardWindowsKeyStorageProvider
Local $serialNumber

Local $i = 0
Local $iCount_i = $oJson.SizeOfArray("reader")
While $i < $iCount_i
    $oJson.I = $i
    $sName = $oJson.StringOf("reader[i].name")
    $state = $oJson.StringOf("reader[i].state")
    $sVendorName = $oJson.StringOf("reader[i].vendorName")
    $systemName = $oJson.StringOf("reader[i].systemName")
    $sCardAtr = $oJson.StringOf("reader[i].card.atr")
    $sCardWindowsMiniDriver = $oJson.StringOf("reader[i].card.windows.miniDriver")
    $sCardWindowsCryptoProvider = $oJson.StringOf("reader[i].card.windows.cryptoProvider")
    $sCardWindowsKeyStorageProvider = $oJson.StringOf("reader[i].card.windows.keyStorageProvider")
    $serialNumber = $oJson.StringOf("reader[i].serialNumber")
    $i = $i + 1
Wend

; Applications should always release the context when finished.
$bSuccess = $oScard.ReleaseContext()
If ($bSuccess = False) Then
    ConsoleWrite($oScard.LastErrorText & @CRLF)
EndIf