diff --git a/components/BLE/BLE.c b/components/BLE/BLE.c
index 90e7c06..00f40ca 100644
--- a/components/BLE/BLE.c
+++ b/components/BLE/BLE.c
@@ -13,6 +13,11 @@ static const char *TAG = "BLE";
 static bool Host_And_Controller_Synced = false;
 static bool Is_Scanning = false;
 static bool Is_Advertising = false;
+static bool Is_Quiet = false;
+static bool Was_Advertising = false;
+
+static TimerHandle_t BLEUnquietTimer = NULL;
+static StaticTimer_t xBLEUnquietTimerBuffer;
 
 static uint8_t Advertising_Data[BLE_KTAG_PACKET_TOTAL_SIZE] = {0x1E, 0xFF, 0xFF, 0xFF, 'K', 'T', 'a', 'g'};
 
@@ -271,8 +276,17 @@ SystemKResult_T BLE_ScanAndAdvertise(void)
         }
         if (Is_Advertising == false)
         {
-            ble_advertise();
-            Is_Advertising = true;
+            if (Is_Quiet == false)
+            {
+                ble_advertise();
+                Is_Advertising = true;
+            }
+            else
+            {
+                // If we are quiet, we don't want to advertise yet,
+                // but we will remember that we were asked to advertise.
+                Was_Advertising = true;
+            }
         }
         result = SYSTEMK_RESULT_SUCCESS;
     }
@@ -311,5 +325,86 @@ SystemKResult_T BLE_StopAdvertising(void)
         result = SYSTEMK_RESULT_SUCCESS;
     }
 
+    return result;
+}
+
+static void Unquiet_Timer_Callback(TimerHandle_t xTimer)
+{
+    KLOG_INFO(TAG, "Unquiet timer expired after %lu ms.", (xTimerGetPeriod(xTimer) / portTICK_PERIOD_MS));
+    BLE_Unquiet();
+}
+
+SystemKResult_T BLE_Quiet(uint32_t duration_ms)
+{
+    SystemKResult_T result = SYSTEMK_RESULT_NOT_READY;
+
+    if (Is_Quiet == true)
+    {
+        // Already quiet; no action needed.
+        return SYSTEMK_RESULT_SUCCESS;
+    }
+
+    if (Host_And_Controller_Synced == true)
+    {
+        Is_Quiet = true;
+
+        if (Is_Advertising == true)
+        {
+            ble_gap_adv_stop();
+            Is_Advertising = false;
+            Was_Advertising = true;
+        }
+
+        if (duration_ms > 0)
+        {
+            // Set a timer to unquiet after the specified duration.
+            BLEUnquietTimer = xTimerCreateStatic(
+                "BLEUnquietTimer",
+                pdMS_TO_TICKS(duration_ms),
+                pdFALSE,
+                (void *)0,
+                Unquiet_Timer_Callback,
+                &xBLEUnquietTimerBuffer);
+
+            if (BLEUnquietTimer == NULL)
+            {
+                KLOG_ERROR(TAG, "Couldn't create the BLEUnquietTimer!");
+            }
+            else
+            {
+                if (xTimerStart(BLEUnquietTimer, 0) != pdPASS)
+                {
+                    KLOG_ERROR(TAG, "Couldn't start the BLEUnquietTimer!");
+                }
+            }
+        }
+        result = SYSTEMK_RESULT_SUCCESS;
+    }
+
+    return result;
+}
+
+SystemKResult_T BLE_Unquiet(void)
+{
+    SystemKResult_T result = SYSTEMK_RESULT_NOT_READY;
+
+    if (Is_Quiet == false)
+    {
+        // Already unquiet; no action needed.
+        return SYSTEMK_RESULT_SUCCESS;
+    }
+
+    if (Host_And_Controller_Synced == true)
+    {
+        Is_Quiet = false;
+        if (Was_Advertising == true)
+        {
+            ble_advertise();
+            Is_Advertising = true;
+            Was_Advertising = false;
+        }
+        result = SYSTEMK_RESULT_SUCCESS;
+    }
+
     return result;
 }
\ No newline at end of file
diff --git a/components/SystemK b/components/SystemK
index fb1a4ab..c514219 160000
--- a/components/SystemK
+++ b/components/SystemK
@@ -1 +1 @@
-Subproject commit fb1a4ab07b990fef8f957ef7c5f806649e126d0f
+Subproject commit c514219ccc3978fa27bb7925a85ce826c37e6e63