Java

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.

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

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

    CkSCard scard = new CkSCard();

    // First establish a context to the PC/SC Resource Manager
    success = scard.EstablishContext("user");
    if (success == false) {
        System.out.println(scard.lastErrorText());
        return;
        }

    CkStringTable stReaders = new CkStringTable();
    success = scard.ListReaders(stReaders);
    if (success == false) {
        System.out.println(scard.lastErrorText());
        return;
        }

    int numReaders = stReaders.get_Count();
    int i = 0;
    while (i < numReaders) {
        System.out.println(i + ": " + stReaders.stringAt(i));
        i = i+1;
        }

    // 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 == false) {
        System.out.println(scard.lastErrorText());
        }
  }
}