Index: sources/gui/qml/components/ModalDialog.qml
===================================================================
diff -u -r5194f3afffb28dac90a7ca4153b6a0ca2f239387 -r4b713d1a13a4461fd46d869d4bf7e52de4c609b4
--- sources/gui/qml/components/ModalDialog.qml	(.../ModalDialog.qml)	(revision 5194f3afffb28dac90a7ca4153b6a0ca2f239387)
+++ sources/gui/qml/components/ModalDialog.qml	(.../ModalDialog.qml)	(revision 4b713d1a13a4461fd46d869d4bf7e52de4c609b4)
@@ -15,6 +15,7 @@
 // Qt
 import QtQuick 2.12
 import QtQuick.Controls 2.12
+import QtGraphicalEffects 1.0
 
 // Project
 //  Qml imports
@@ -24,6 +25,8 @@
  * \brief   The parent item for modal dialogs
  */
 Dialog { id : _root
+    property bool blurOverlay: false
+
     width : Variables.poweroffWidth
     height: Variables.poweroffHeight
     visible: false
@@ -33,12 +36,23 @@
     exit : Transition { NumberAnimation { property: "opacity"; from: 1.0; to: 0.0 } }
 
     modal: true
-    closePolicy: Dialog.NoAutoClose
-    Overlay.modal : Rectangle { id : _borderRect
-        anchors.fill: parent
-        color: Colors.borderDialog
+    Component { id: _rectOverlay
+        Rectangle { id : _borderRect
+            anchors.fill: parent
+            color: Colors.borderDialog
+        }
     }
+    Component { id: _blurOverlay
+        FastBlur { id : _borderRect
+            anchors.fill: parent
+            source: _mainItem
+            radius: 25
+        }
+    }
 
+    closePolicy: Dialog.NoAutoClose
+    Overlay.modal : blurOverlay ? _blurOverlay : _rectOverlay
+
     background: Rectangle {
         color : Colors.backgroundDialog
         radius: Variables.dialogRadius