diff --git a/WaveshareUARTFingerprintSensor.Sample/Views/DataDisplay.cs b/WaveshareUARTFingerprintSensor.Sample/Views/DataDisplay.cs
index 52ce317..28f3902 100644
--- a/WaveshareUARTFingerprintSensor.Sample/Views/DataDisplay.cs
+++ b/WaveshareUARTFingerprintSensor.Sample/Views/DataDisplay.cs
@@ -23,6 +23,8 @@ namespace WaveshareUARTFingerprintSensor.Sample.Views
 
         private void Init()
         {
+            Modal = true;
+
             ColorScheme = Colors.TopLevel;
 
             // Creates the top-level window to show
diff --git a/WaveshareUARTFingerprintSensor.Sample/Views/SettingsDisplay.cs b/WaveshareUARTFingerprintSensor.Sample/Views/SettingsDisplay.cs
index f41ef63..80b9175 100644
--- a/WaveshareUARTFingerprintSensor.Sample/Views/SettingsDisplay.cs
+++ b/WaveshareUARTFingerprintSensor.Sample/Views/SettingsDisplay.cs
@@ -21,6 +21,8 @@ namespace WaveshareUARTFingerprintSensor.Sample.Views
 
         private void Init()
         {
+            Modal = true;
+
             ColorScheme = Colors.Error;
 
             // Creates the top-level window to show
diff --git a/WaveshareUARTFingerprintSensor.Sample/Views/SleepDisplay.cs b/WaveshareUARTFingerprintSensor.Sample/Views/SleepDisplay.cs
index 7eea2d2..fb3ab4b 100644
--- a/WaveshareUARTFingerprintSensor.Sample/Views/SleepDisplay.cs
+++ b/WaveshareUARTFingerprintSensor.Sample/Views/SleepDisplay.cs
@@ -29,6 +29,8 @@ namespace WaveshareUARTFingerprintSensor.Sample.Views
 
         private void Init()
         {
+            Modal = true;
+
             ColorScheme = Colors.Error;
 
             // Creates the top-level window to show