diff --git a/examples/ble_central/ble_app_gatts/main.c b/examples/ble_central/ble_app_gatts/main.c
index 7d5022d..34e769c 100644
--- a/examples/ble_central/ble_app_gatts/main.c
+++ b/examples/ble_central/ble_app_gatts/main.c
@@ -85,10 +85,10 @@
 #define APP_SOC_OBSERVER_PRIO     1                                /**< Applications' SoC observer priority. You shouldn't need to modify this value. */
 
 #define SEC_PARAM_BOND            1                                /**< Perform bonding. */
-#define SEC_PARAM_MITM            0                                /**< Man In The Middle protection not required. */
+#define SEC_PARAM_MITM            1                                /**< Man In The Middle protection not required. */
 #define SEC_PARAM_LESC            0                                /**< LE Secure Connections not enabled. */
 #define SEC_PARAM_KEYPRESS        0                                /**< Keypress notifications not enabled. */
-#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE             /**< No I/O capabilities. */
+#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_KEYBOARD_ONLY    /**< No I/O capabilities. */
 #define SEC_PARAM_OOB             0                                /**< Out Of Band data not available. */
 #define SEC_PARAM_MIN_KEY_SIZE    7                                /**< Minimum encryption key size. */
 #define SEC_PARAM_MAX_KEY_SIZE    16                               /**< Maximum encryption key size. */
@@ -293,6 +293,19 @@ static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
                                              BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
             APP_ERROR_CHECK(err_code);
         } break;
+        
+        case BLE_GAP_EVT_AUTH_KEY_REQUEST:
+        {
+          
+          NRF_LOG_DEBUG("GAP Passkey request.");
+          uint8_t passkey[] = "000000"; 
+          if (p_gap_evt->params.auth_key_request.key_type == BLE_GAP_AUTH_KEY_TYPE_PASSKEY)
+          {
+              err_code = sd_ble_gap_auth_key_reply(p_gap_evt->conn_handle, BLE_GAP_AUTH_KEY_TYPE_PASSKEY, passkey);
+              APP_ERROR_CHECK(err_code);
+          }
+          
+        } break;
 
         default:
             break;
diff --git a/examples/ble_central/ble_app_gatts/pca10040/s132/config/sdk_config.h b/examples/ble_central/ble_app_gatts/pca10040/s132/config/sdk_config.h
index c48d10b..96949d4 100644
--- a/examples/ble_central/ble_app_gatts/pca10040/s132/config/sdk_config.h
+++ b/examples/ble_central/ble_app_gatts/pca10040/s132/config/sdk_config.h
@@ -7434,7 +7434,7 @@
 // <e> NRF_LOG_BACKEND_RTT_ENABLED - nrf_log_backend_rtt - Log RTT backend
 //==========================================================
 #ifndef NRF_LOG_BACKEND_RTT_ENABLED
-#define NRF_LOG_BACKEND_RTT_ENABLED 0
+#define NRF_LOG_BACKEND_RTT_ENABLED 1
 #endif
 // <o> NRF_LOG_BACKEND_RTT_TEMP_BUFFER_SIZE - Size of buffer for partially processed strings. 
 // <i> Size of the buffer is a trade-off between RAM usage and processing.
@@ -7467,7 +7467,7 @@
 // <e> NRF_LOG_BACKEND_UART_ENABLED - nrf_log_backend_uart - Log UART backend
 //==========================================================
 #ifndef NRF_LOG_BACKEND_UART_ENABLED
-#define NRF_LOG_BACKEND_UART_ENABLED 1
+#define NRF_LOG_BACKEND_UART_ENABLED 0
 #endif
 // <o> NRF_LOG_BACKEND_UART_TX_PIN - UART TX pin 
 #ifndef NRF_LOG_BACKEND_UART_TX_PIN
diff --git a/examples/ble_peripheral/ble_app_gatts_c/main.c b/examples/ble_peripheral/ble_app_gatts_c/main.c
index ebd2823..74a8a9c 100644
--- a/examples/ble_peripheral/ble_app_gatts_c/main.c
+++ b/examples/ble_peripheral/ble_app_gatts_c/main.c
@@ -147,6 +147,7 @@ static void gap_params_init(void)
     ret_code_t              err_code;
     ble_gap_conn_params_t   gap_conn_params;
     ble_gap_conn_sec_mode_t sec_mode;
+    ble_opt_t               ble_opt;
 
     BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
 
@@ -164,6 +165,11 @@ static void gap_params_init(void)
 
     err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
     APP_ERROR_CHECK(err_code);
+
+    ble_opt.gap_opt.passkey.p_passkey = "000000";
+
+    err_code = sd_ble_opt_set(BLE_GAP_OPT_PASSKEY, &ble_opt);
+    APP_ERROR_CHECK(err_code);
 }
 
 
diff --git a/examples/ble_peripheral/ble_app_gatts_c/pca10040/s132/config/sdk_config.h b/examples/ble_peripheral/ble_app_gatts_c/pca10040/s132/config/sdk_config.h
index 93b1b15..efe405d 100644
--- a/examples/ble_peripheral/ble_app_gatts_c/pca10040/s132/config/sdk_config.h
+++ b/examples/ble_peripheral/ble_app_gatts_c/pca10040/s132/config/sdk_config.h
@@ -90,7 +90,7 @@
 // <4=> BLE_GAP_IO_CAPS_KEYBOARD_DISPLAY 
 
 #ifndef SEC_PARAM_IO_CAPABILITIES
-#define SEC_PARAM_IO_CAPABILITIES 3
+#define SEC_PARAM_IO_CAPABILITIES 0
 #endif
 
 // <o> SEC_PARAM_MAX_KEY_SIZE - Maximum encryption key size in octets between SEC_PARAM_MIN_KEY_SIZE and 16.  <0-16> 
@@ -111,7 +111,7 @@
  
 
 #ifndef SEC_PARAM_MITM
-#define SEC_PARAM_MITM 0
+#define SEC_PARAM_MITM 1
 #endif
 
 // <q> SEC_PARAM_OOB  - Out Of Band data not available or not
@@ -7419,7 +7419,7 @@
 // <e> NRF_LOG_BACKEND_RTT_ENABLED - nrf_log_backend_rtt - Log RTT backend
 //==========================================================
 #ifndef NRF_LOG_BACKEND_RTT_ENABLED
-#define NRF_LOG_BACKEND_RTT_ENABLED 0
+#define NRF_LOG_BACKEND_RTT_ENABLED 1
 #endif
 // <o> NRF_LOG_BACKEND_RTT_TEMP_BUFFER_SIZE - Size of buffer for partially processed strings. 
 // <i> Size of the buffer is a trade-off between RAM usage and processing.
@@ -7452,7 +7452,7 @@
 // <e> NRF_LOG_BACKEND_UART_ENABLED - nrf_log_backend_uart - Log UART backend
 //==========================================================
 #ifndef NRF_LOG_BACKEND_UART_ENABLED
-#define NRF_LOG_BACKEND_UART_ENABLED 1
+#define NRF_LOG_BACKEND_UART_ENABLED 0
 #endif
 // <o> NRF_LOG_BACKEND_UART_TX_PIN - UART TX pin 
 #ifndef NRF_LOG_BACKEND_UART_TX_PIN