Node.js

PC/SC Get Card UID

See more SCard Examples

Sends the APDU command to get a card's UID. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var scard = new chilkat.SCard();

    // First establish a context to the PC/SC Resource Manager
    success = scard.EstablishContext("user");
    if (success == false) {
        console.log(scard.LastErrorText);
        return;
    }

    // Use your own smart card reader name here.
    success = scard.Connect("ACS ACR122 0","shared","no_preference");
    if (success == false) {
        console.log(scard.LastErrorText);
        return;
    }

    console.log("Connected reader: " + scard.ConnectedReader);
    console.log("Active protocol: " + scard.ActiveProtocol);
    console.log("ATR: " + scard.CardAtr);
    console.log("Reader Status: " + scard.ReaderStatus);

    //  Send the APDU command 0xFF, 0xCA, 0x00, 0x00, 0x00
    var bdRecv = new chilkat.BinData();
    success = scard.TransmitHex(scard.ActiveProtocol,"FFCA000000",bdRecv,32);
    if (success == true) {

        console.log("Received: " + bdRecv.GetEncoded("hex"));

        // The UID is the returned data without the final 2 bytes.
        var numBytes = bdRecv.NumBytes;
        if (numBytes > 2) {
            console.log("UID: " + bdRecv.GetEncodedChunk(0,numBytes - 2,"hex"));
        }

    }
    else {
        console.log(scard.LastErrorText);
    }

    // Disconnect from this reader.
    success = scard.Disconnect("leave");
    if (success == false) {
        console.log(scard.LastErrorText);
    }

    // Applications should always release the context when finished.
    success = scard.ReleaseContext();
    if (success == false) {
        console.log(scard.LastErrorText);
    }


}

chilkatExample();