diff --git a/src/gnuk.h b/src/gnuk.h
index ef88753..811ad84 100644
--- a/src/gnuk.h
+++ b/src/gnuk.h
@@ -17,6 +17,7 @@ struct apdu {
 };
 
 extern struct apdu apdu;
+void ccid_card_change_signal (void);
 
 /* CCID thread */
 #define EV_RX_DATA_READY (1) /* USB Rx data available  */
diff --git a/src/usb-icc.c b/src/usb-icc.c
index 3aa5aca..58d061e 100644
--- a/src/usb-icc.c
+++ b/src/usb-icc.c
@@ -252,7 +252,7 @@ static void ccid_init (struct ccid *c, struct ep_in *epi, struct ep_out *epo,
 {
   icc_state_p = &c->icc_state;
 
-  c->icc_state = ICC_STATE_START;
+  c->icc_state = ICC_STATE_NOCARD; /* Default should be _START ?? */
   c->state = APDU_STATE_WAIT_COMMAND;
   /*
    * Note: a is not yet initialized yet, we can't use c->a->cmd_apdu_data here.
@@ -722,12 +722,12 @@ static void icc_error (struct ccid *c, int offset)
   icc_reply[4] = 0x00;
   icc_reply[5] = 0x00;	/* Slot */
   icc_reply[ICC_MSG_SEQ_OFFSET] = c->icc_header.seq;
-  if (c->icc_state == ICC_STATE_START)
-    /* 1: ICC present but not activated 2: No ICC present */
-    icc_reply[ICC_MSG_STATUS_OFFSET] = 1;
+  if (c->icc_state == ICC_STATE_NOCARD)
+    icc_reply[ICC_MSG_STATUS_OFFSET] = 2; /* 2: No ICC present */
+  else if (c->icc_state == ICC_STATE_START)
+    icc_reply[ICC_MSG_STATUS_OFFSET] = 1; /* 1: ICC present but not activated */
   else
-    /* An ICC is present and active */
-    icc_reply[ICC_MSG_STATUS_OFFSET] = 0;
+    icc_reply[ICC_MSG_STATUS_OFFSET] = 0; /* An ICC is present and active */
   icc_reply[ICC_MSG_STATUS_OFFSET] |= ICC_CMD_STATUS_ERROR; /* Failed */
   icc_reply[ICC_MSG_ERROR_OFFSET] = offset;
   icc_reply[ICC_MSG_CHAIN_OFFSET] = 0x00;
@@ -793,12 +793,12 @@ icc_send_status (struct ccid *c)
   icc_reply[4] = 0x00;
   icc_reply[5] = 0x00;	/* Slot */
   icc_reply[ICC_MSG_SEQ_OFFSET] = c->icc_header.seq;
-  if (c->icc_state == ICC_STATE_START)
-    /* 1: ICC present but not activated 2: No ICC present */
-    icc_reply[ICC_MSG_STATUS_OFFSET] = 1;
+  if (c->icc_state == ICC_STATE_NOCARD)
+    icc_reply[ICC_MSG_STATUS_OFFSET] = 2; /* 2: No ICC present */
+  else if (c->icc_state == ICC_STATE_START)
+    icc_reply[ICC_MSG_STATUS_OFFSET] = 1; /* 1: ICC present but not activated */
   else
-    /* An ICC is present and active */
-    icc_reply[ICC_MSG_STATUS_OFFSET] = 0;
+    icc_reply[ICC_MSG_STATUS_OFFSET] = 0; /* An ICC is present and active */
   icc_reply[ICC_MSG_ERROR_OFFSET] = 0x00;
   icc_reply[ICC_MSG_CHAIN_OFFSET] = 0x00;
 
@@ -1075,6 +1075,15 @@ icc_handle_data (struct ccid *c)
 
   switch (c->icc_state)
     {
+    case ICC_STATE_NOCARD:
+      if (c->icc_header.msg_type == ICC_SLOT_STATUS)
+	icc_send_status (c);
+      else
+	{
+	  DEBUG_INFO ("ERR00\r\n");
+	  icc_error (c, ICC_OFFSET_CMD_NOT_SUPPORTED);
+	}
+      break;
     case ICC_STATE_START:
       if (c->icc_header.msg_type == ICC_POWER_ON)
 	{
@@ -1307,6 +1316,15 @@ USBthread (void *arg)
   return ccid_thread (thd);
 }
 
+void
+ccid_card_change_signal (void)
+{
+  struct ccid *c = &ccid;
+
+  eventflag_signal (&c->ccid_comm, EV_CARD_CHANGE);
+}
+
+
 static void *
 ccid_thread (chopstx_t thd)
 {
@@ -1314,6 +1332,7 @@ ccid_thread (chopstx_t thd)
   struct ep_out *epo = &endpoint_out;
   struct ccid *c = &ccid;
   struct apdu *a = &apdu;
+  int card_change_requested = 0;
 
   epi_init (epi, ENDP1, notify_tx, c);
   epo_init (epo, ENDP1, notify_icc, c);
@@ -1327,7 +1346,33 @@ ccid_thread (chopstx_t thd)
 
       m = eventflag_wait_timeout (&c->ccid_comm, USB_ICC_TIMEOUT);
 
-      if (m == EV_RX_DATA_READY)
+      if (m == EV_CARD_CHANGE)
+	{
+	  if (card_change_requested)
+	    {
+	      led_blink (LED_TWOSHOTS);
+
+	      if (c->icc_state == ICC_STATE_NOCARD)
+		/* Inserted!  */
+		c->icc_state = ICC_STATE_START;
+	      else
+		{
+		  if (c->application)
+		    {
+		      eventflag_signal (&c->openpgp_comm, EV_EXIT);
+		      chopstx_join (c->application, NULL);
+		      c->application = 0;
+		    }
+
+		  c->icc_state = ICC_STATE_NOCARD;
+		}
+
+	      card_change_requested = 0;
+	    }
+	  else
+	    card_change_requested = 1;
+	}
+      else if (m == EV_RX_DATA_READY)
 	c->icc_state = icc_handle_data (c);
       else if (m == EV_EXEC_FINISHED)
 	if (c->icc_state == ICC_STATE_EXECUTE)
@@ -1383,7 +1428,10 @@ ccid_thread (chopstx_t thd)
 	    icc_prepare_receive (c);
 	}
       else			/* Timeout */
-	c->icc_state = icc_handle_timeout (c);
+	{
+	  c->icc_state = icc_handle_timeout (c);
+	  card_change_requested = 0;
+	}
     }
 
   return NULL;
diff --git a/src/usb_ctrl.c b/src/usb_ctrl.c
index 2fa1e98..cd610ad 100644
--- a/src/usb_ctrl.c
+++ b/src/usb_ctrl.c
@@ -130,7 +130,11 @@ uint32_t bDeviceState = UNCONNECTED; /* USB device status */
 #define USB_HID_REQ_SET_IDLE     10
 #define USB_HID_REQ_SET_PROTOCOL 11
 
+#define HID_LED_STATUS_NUMLOCK 0x01
+
 static uint8_t hid_idle_rate;	/* in 4ms */
+static uint8_t hid_report_saved;
+static uint16_t hid_report;
 
 static void
 gnuk_setup_endpoints_for_interface (uint16_t interface, int stop)
@@ -346,11 +350,14 @@ usb_cb_setup (uint8_t req, uint8_t req_no,
 	      return USB_SUCCESS;
 
 	    case USB_HID_REQ_GET_REPORT:
-	      usb_lld_set_data_to_send (&zero, 2);
+	      /* Request of LED status and key press */
+	      usb_lld_set_data_to_send (&hid_report, 2);
 	      return USB_SUCCESS;
 
 	    case USB_HID_REQ_SET_REPORT:
-	      /* Received LED set request!  */
+	      /* Received LED set request */
+	      if (len == 1)
+		usb_lld_set_data_to_recv (&hid_report, len);
 	      return USB_SUCCESS;
 
 	    case USB_HID_REQ_GET_PROTOCOL:
@@ -388,20 +395,34 @@ usb_cb_setup (uint8_t req, uint8_t req_no,
   return USB_UNSUPPORT;
 }
 
-void usb_cb_ctrl_write_finish (uint8_t req, uint8_t req_no, uint16_t value,
-			       uint16_t index, uint16_t len)
+
+void
+usb_cb_ctrl_write_finish (uint8_t req, uint8_t req_no, uint16_t value,
+			  uint16_t index, uint16_t len)
 {
   uint8_t type_rcp = req & (REQUEST_TYPE|RECIPIENT);
 
-  if (type_rcp == (VENDOR_REQUEST | DEVICE_RECIPIENT)
-      && USB_SETUP_SET (req) && req_no == USB_FSIJ_GNUK_EXEC && len == 0)
+  if (type_rcp == (VENDOR_REQUEST | DEVICE_RECIPIENT))
     {
-      if (icc_state_p == NULL || *icc_state_p != ICC_STATE_EXITED)
-	return;
+      if (USB_SETUP_SET (req) && req_no == USB_FSIJ_GNUK_EXEC && len == 0)
+	{
+	  if (icc_state_p == NULL || *icc_state_p != ICC_STATE_EXITED)
+	    return;
 
-      (void)value; (void)index;
-      usb_lld_prepare_shutdown (); /* No further USB communication */
-      *icc_state_p = ICC_STATE_EXEC_REQUESTED;
+	  (void)value; (void)index;
+	  usb_lld_prepare_shutdown (); /* No further USB communication */
+	  *icc_state_p = ICC_STATE_EXEC_REQUESTED;
+	}
+    }
+  else if (type_rcp == (CLASS_REQUEST | INTERFACE_RECIPIENT))
+    {
+      if (index == 1 && req_no == USB_HID_REQ_SET_REPORT)
+	{
+	  if ((hid_report ^ hid_report_saved) & HID_LED_STATUS_NUMLOCK)
+	    ccid_card_change_signal ();
+
+	  hid_report_saved = hid_report;
+	}
     }
 }
 
diff --git a/src/usb_desc.c b/src/usb_desc.c
index 497b5cd..e0d250b 100644
--- a/src/usb_desc.c
+++ b/src/usb_desc.c
@@ -18,7 +18,7 @@
 
 static const uint8_t hid_report_desc[] = {
   0x05, 0x01,	    /* USAGE_PAGE (Generic Desktop) */
-  0x09, 0x06,	    /* USAGE (Keyboard) */
+  0x09, 0x07,	    /* USAGE (Keypad) */
   0xa1, 0x01,	    /* COLLECTION (Application) */
   0x05, 0x07,	    /*   USAGE_PAGE (Key Codes) */
   0x19, 0xe0,	    /*   USAGE_MINIMUM (Keyboard LeftControl) */
@@ -29,16 +29,16 @@ static const uint8_t hid_report_desc[] = {
   0x95, 0x08,	    /*   REPORT_COUNT (8) */
   0x81, 0x02,	    /*   INPUT (Data,Var,Abs); Modifier byte */
 
-  /* NumLock, CapsLock, ScrollLock, Compose, Kana */
+  /*
+   * NumLock, CapsLock, ScrollLock, Compose, Kana, Power, Shift,
+   * Do Not Disturb
+   */
   0x05, 0x08,	    /*   USAGE_PAGE (LEDs) */
   0x19, 0x01,	    /*   USAGE_MINIMUM (1) */
-  0x29, 0x05,	    /*   USAGE_MAXIMUM (5) */
-  0x95, 0x05,	    /*   REPORT_COUNT (5) */
+  0x29, 0x08,	    /*   USAGE_MAXIMUM (8) */
+  0x95, 0x08,	    /*   REPORT_COUNT (8) */
   0x75, 0x01,	    /*   REPORT_SIZE (1) */
   0x91, 0x02,	    /*   OUTPUT (Data,Var,Abs); LED report */
-  0x95, 0x01,	    /*   REPORT_COUNT (1) */
-  0x75, 0x03,	    /*   REPORT_SIZE (3) */
-  0x91, 0x01,	    /*   OUTPUT (Constant); LED report padding */
 
   0x05, 0x07,	    /*   USAGE_PAGE (Key Codes) */
   0x19, 0x00,	    /*   USAGE_MINIMUM (Reserved (no event indicated)) */
@@ -73,7 +73,7 @@ static const uint8_t gnukDeviceDescriptor[] = {
   0x01    /* bNumConfigurations */
 };
 
-#define ICC_TOTAL_LENGTH (9+9+54+7+7)
+#define ICC_TOTAL_LENGTH (9+9+54+7+7+7)
 #define ICC_NUM_INTERFACES 1
 
 #define HID_TOTAL_LENGTH (9+9+7)
@@ -126,7 +126,7 @@ static const uint8_t gnukConfigDescriptor[] = {
   USB_INTERFACE_DESCRIPTOR_TYPE, /* bDescriptorType: Interface */
   0,			         /* bInterfaceNumber: Index of this interface */
   0,			         /* Alternate setting for this interface */
-  2,			         /* bNumEndpoints: Bulk-IN, Bulk-OUT */
+  3,			         /* bNumEndpoints: Bulk-IN, Bulk-OUT, Intr-IN */
   USB_ICC_INTERFACE_CLASS,
   USB_ICC_INTERFACE_SUBCLASS,
   USB_ICC_INTERFACE_BULK_PROTOCOL,
@@ -197,6 +197,13 @@ static const uint8_t gnukConfigDescriptor[] = {
   0x02,				/* bmAttributes: Bulk */
   USB_ICC_DATA_SIZE, 0x00,	/* wMaxPacketSize: */
   0x00,				/* bInterval */
+  /*Endpoint IN2 Descriptor*/
+  7,			       /* bLength: Endpoint Descriptor size */
+  USB_ENDPOINT_DESCRIPTOR_TYPE,	/* bDescriptorType: Endpoint */
+  0x82,				/* bEndpointAddress: (IN2) */
+  0x03,				/* bmAttributes: Interrupt */
+  4, 0x00,			/* wMaxPacketSize: */
+  0x20,				/* bInterval (32ms) */
 
   /* Interface Descriptor */
   9,			         /* bLength: Interface Descriptor size */