In the following code, using TerminalFactory factory = TerminalFactory.getDefault();
instead of TerminalFactory factory = TerminalFactory.getInstance("PC/SC", null, "SunPCSC");
will get "No card teminals available" exception.

It works fine before b50 and start to fail after b51.

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import java.security.*;
import java.io.*;
import java.util.*;
import javax.smartcardio.*;

public class PermissionTest {
   public static void main(String[] args) throws Exception{
         
         String defaultType = TerminalFactory.getDefaultType();
         TerminalFactory factory = TerminalFactory.getDefault();
         //TerminalFactory factory = TerminalFactory.getInstance("PC/SC", null, "SunPCSC");
         System.out.println(factory);
         Provider provider = factory.getProvider();
         String type = factory.getType();
     
         List<CardTerminal> terminals = factory.terminals();
         if (terminals.isEmpty()) {
throw new Exception("No card terminals available");
}
         // get the first terminal
         CardTerminal terminal = terminals.get(0);
       
         String terminalName = terminal.getName();
         if (terminal.isCardPresent() == false) {
System.out.println("*** Insert card");
if (terminal.waitForCardPresent(20 * 1000) == false) {
throw new Exception("no card available");
}
         }
      
         // establish a connection with the card
         Card card = terminal.connect("T=0");
         CardChannel cc = card.getBasicChannel();
         // disconnect
         card.disconnect(true);
         System.out.println("Pass");
   }
}