diff --git a/example/pubspec.lock b/example/pubspec.lock
index 3b83a98..625a7b8 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -148,7 +148,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.8.4"
+    version: "0.8.5"
   font_awesome_flutter:
     dependency: "direct main"
     description:
diff --git a/lib/src/ui/dynamic_scanner_overlay.dart b/lib/src/ui/dynamic_scanner_overlay.dart
new file mode 100644
index 0000000..f3cb117
--- /dev/null
+++ b/lib/src/ui/dynamic_scanner_overlay.dart
@@ -0,0 +1,119 @@
+import 'package:flutter/material.dart';
+
+import '../../flutter_zxing.dart';
+
+class DynamicScannerOverlay extends ScannerOverlay {
+
+  const DynamicScannerOverlay({
+    super.borderColor,
+    super.borderWidth,
+    super.overlayColor,
+    super.borderRadius,
+    super.borderLength,
+    this.cutOutSize = 0.5
+  });
+
+  @override
+  final double cutOutSize;
+
+  @override
+  void paint(Canvas canvas, Rect rect, {TextDirection? textDirection}) {
+    final double width = rect.width;
+    final double height = rect.height;
+    final double borderOffset = borderWidth / 2;
+    final double newBorderLength = borderLength;
+    final double newCutOutSize = width * cutOutSize;
+
+    final Paint backgroundPaint = Paint()
+      ..color = overlayColor
+      ..style = PaintingStyle.fill;
+
+    final Paint borderPaint = Paint()
+      ..color = borderColor
+      ..style = PaintingStyle.stroke
+      ..strokeWidth = borderWidth;
+
+    final Paint boxPaint = Paint()
+      ..color = borderColor
+      ..style = PaintingStyle.fill
+      ..blendMode = BlendMode.dstOut;
+
+    final Rect cutOutRect = Rect.fromLTWH(
+      rect.left + width / 2 - newCutOutSize / 2 + borderOffset,
+      rect.top + height / 2 - newCutOutSize / 2 + borderOffset,
+      newCutOutSize - borderOffset * 2,
+      newCutOutSize - borderOffset * 2,
+    );
+
+    canvas
+      ..saveLayer(
+        rect,
+        backgroundPaint,
+      )
+      ..drawRect(
+        rect,
+        backgroundPaint,
+      )
+    // Draw top right corner
+      ..drawRRect(
+        RRect.fromLTRBAndCorners(
+          cutOutRect.right - newBorderLength,
+          cutOutRect.top,
+          cutOutRect.right,
+          cutOutRect.top + newBorderLength,
+          topRight: Radius.circular(borderRadius),
+        ),
+        borderPaint,
+      )
+    // Draw top left corner
+      ..drawRRect(
+        RRect.fromLTRBAndCorners(
+          cutOutRect.left,
+          cutOutRect.top,
+          cutOutRect.left + newBorderLength,
+          cutOutRect.top + newBorderLength,
+          topLeft: Radius.circular(borderRadius),
+        ),
+        borderPaint,
+      )
+    // Draw bottom right corner
+      ..drawRRect(
+        RRect.fromLTRBAndCorners(
+          cutOutRect.right - newBorderLength,
+          cutOutRect.bottom - newBorderLength,
+          cutOutRect.right,
+          cutOutRect.bottom,
+          bottomRight: Radius.circular(borderRadius),
+        ),
+        borderPaint,
+      )
+    // Draw bottom left corner
+      ..drawRRect(
+        RRect.fromLTRBAndCorners(
+          cutOutRect.left,
+          cutOutRect.bottom - newBorderLength,
+          cutOutRect.left + newBorderLength,
+          cutOutRect.bottom,
+          bottomLeft: Radius.circular(borderRadius),
+        ),
+        borderPaint,
+      )
+      ..drawRRect(
+        RRect.fromRectAndRadius(
+          cutOutRect,
+          Radius.circular(borderRadius),
+        ),
+        boxPaint,
+      )
+      ..restore();
+  }
+
+  @override
+  DynamicScannerOverlay scale(double t) {
+    return DynamicScannerOverlay(
+      borderColor: borderColor,
+      borderWidth: borderWidth * t,
+      overlayColor: overlayColor,
+    );
+  }
+}
diff --git a/lib/src/ui/fixed_scanner_overlay.dart b/lib/src/ui/fixed_scanner_overlay.dart
new file mode 100644
index 0000000..27a8f1d
--- /dev/null
+++ b/lib/src/ui/fixed_scanner_overlay.dart
@@ -0,0 +1,126 @@
+import 'package:flutter/material.dart';
+
+import '../../flutter_zxing.dart';
+
+class FixedScannerOverlay extends ScannerOverlay {
+
+  const FixedScannerOverlay({
+    super.borderColor,
+    super.borderWidth,
+    super.overlayColor,
+    super.borderRadius,
+    super.borderLength,
+    this.cutOutSize = 250
+  }) : assert(borderLength <= cutOutSize / 2 + borderWidth * 2,
+  "Border can't be larger than ${cutOutSize / 2 + borderWidth * 2}");
+
+  @override
+  final double cutOutSize;
+
+
+  @override
+  void paint(Canvas canvas, Rect rect, {TextDirection? textDirection}) {
+    final double width = rect.width;
+    final double borderWidthSize = width / 2;
+    final double height = rect.height;
+    final double borderOffset = borderWidth / 2;
+    final double newBorderLength =
+    borderLength > cutOutSize / 2 + borderWidth * 2
+        ? borderWidthSize / 2
+        : borderLength;
+    final double newCutOutSize =
+    cutOutSize < width ? cutOutSize : width - borderOffset;
+
+    final Paint backgroundPaint = Paint()
+      ..color = overlayColor
+      ..style = PaintingStyle.fill;
+
+    final Paint borderPaint = Paint()
+      ..color = borderColor
+      ..style = PaintingStyle.stroke
+      ..strokeWidth = borderWidth;
+
+    final Paint boxPaint = Paint()
+      ..color = borderColor
+      ..style = PaintingStyle.fill
+      ..blendMode = BlendMode.dstOut;
+
+    final Rect cutOutRect = Rect.fromLTWH(
+      rect.left + width / 2 - newCutOutSize / 2 + borderOffset,
+      rect.top + height / 2 - newCutOutSize / 2 + borderOffset,
+      newCutOutSize - borderOffset * 2,
+      newCutOutSize - borderOffset * 2,
+    );
+
+    canvas
+      ..saveLayer(
+        rect,
+        backgroundPaint,
+      )
+      ..drawRect(
+        rect,
+        backgroundPaint,
+      )
+    // Draw top right corner
+      ..drawRRect(
+        RRect.fromLTRBAndCorners(
+          cutOutRect.right - newBorderLength,
+          cutOutRect.top,
+          cutOutRect.right,
+          cutOutRect.top + newBorderLength,
+          topRight: Radius.circular(borderRadius),
+        ),
+        borderPaint,
+      )
+    // Draw top left corner
+      ..drawRRect(
+        RRect.fromLTRBAndCorners(
+          cutOutRect.left,
+          cutOutRect.top,
+          cutOutRect.left + newBorderLength,
+          cutOutRect.top + newBorderLength,
+          topLeft: Radius.circular(borderRadius),
+        ),
+        borderPaint,
+      )
+    // Draw bottom right corner
+      ..drawRRect(
+        RRect.fromLTRBAndCorners(
+          cutOutRect.right - newBorderLength,
+          cutOutRect.bottom - newBorderLength,
+          cutOutRect.right,
+          cutOutRect.bottom,
+          bottomRight: Radius.circular(borderRadius),
+        ),
+        borderPaint,
+      )
+    // Draw bottom left corner
+      ..drawRRect(
+        RRect.fromLTRBAndCorners(
+          cutOutRect.left,
+          cutOutRect.bottom - newBorderLength,
+          cutOutRect.left + newBorderLength,
+          cutOutRect.bottom,
+          bottomLeft: Radius.circular(borderRadius),
+        ),
+        borderPaint,
+      )
+      ..drawRRect(
+        RRect.fromRectAndRadius(
+          cutOutRect,
+          Radius.circular(borderRadius),
+        ),
+        boxPaint,
+      )
+      ..restore();
+  }
+
+  @override
+  FixedScannerOverlay scale(double t) {
+    return FixedScannerOverlay(
+      borderColor: borderColor,
+      borderWidth: borderWidth * t,
+      overlayColor: overlayColor,
+    );
+  }
+}
diff --git a/lib/src/ui/reader_widget.dart b/lib/src/ui/reader_widget.dart
index 133435d..0fcae85 100644
--- a/lib/src/ui/reader_widget.dart
+++ b/lib/src/ui/reader_widget.dart
@@ -10,6 +10,7 @@ import 'package:flutter/material.dart';
 import '../../generated_bindings.dart';
 import '../logic/zxing.dart';
 import '../utils/extentions.dart';
+import 'fixed_scanner_overlay.dart';
 import 'scanner_overlay.dart';
 
 class ReaderWidget extends StatefulWidget {
@@ -225,7 +226,7 @@ class _ReaderWidgetState extends State<ReaderWidget>
           Container(
             decoration: ShapeDecoration(
               shape: widget.scannerOverlay ??
-                  ScannerOverlay(
+                  FixedScannerOverlay(
                     borderColor: Theme.of(context).primaryColor,
                     overlayColor: Colors.black45,
                     borderRadius: 1,
diff --git a/lib/src/ui/scanner_overlay.dart b/lib/src/ui/scanner_overlay.dart
index 76f752e..233466a 100644
--- a/lib/src/ui/scanner_overlay.dart
+++ b/lib/src/ui/scanner_overlay.dart
@@ -1,22 +1,22 @@
 import 'package:flutter/material.dart';
 
-class ScannerOverlay extends ShapeBorder {
-  const ScannerOverlay({
+abstract class ScannerOverlay extends ShapeBorder {
+
+  const ScannerOverlay ({
     this.borderColor = Colors.red,
     this.borderWidth = 3.0,
     this.overlayColor = const Color.fromRGBO(0, 0, 0, 40),
     this.borderRadius = 0,
     this.borderLength = 40,
-    this.cutOutSize = 250,
-  }) : assert(borderLength <= cutOutSize / 2 + borderWidth * 2,
-            "Border can't be larger than ${cutOutSize / 2 + borderWidth * 2}");
+  });
 
   final Color borderColor;
   final double borderWidth;
   final Color overlayColor;
   final double borderRadius;
   final double borderLength;
-  final double cutOutSize;
+  abstract final double cutOutSize;
+
 
   @override
   EdgeInsetsGeometry get dimensions => const EdgeInsets.all(10);
@@ -53,108 +53,9 @@ class ScannerOverlay extends ShapeBorder {
   }
 
   @override
-  void paint(Canvas canvas, Rect rect, {TextDirection? textDirection}) {
-    final double width = rect.width;
-    final double borderWidthSize = width / 2;
-    final double height = rect.height;
-    final double borderOffset = borderWidth / 2;
-    final double newBorderLength =
-        borderLength > cutOutSize / 2 + borderWidth * 2
-            ? borderWidthSize / 2
-            : borderLength;
-    final double newCutOutSize =
-        cutOutSize < width ? cutOutSize : width - borderOffset;
-
-    final Paint backgroundPaint = Paint()
-      ..color = overlayColor
-      ..style = PaintingStyle.fill;
-
-    final Paint borderPaint = Paint()
-      ..color = borderColor
-      ..style = PaintingStyle.stroke
-      ..strokeWidth = borderWidth;
-
-    final Paint boxPaint = Paint()
-      ..color = borderColor
-      ..style = PaintingStyle.fill
-      ..blendMode = BlendMode.dstOut;
-
-    final Rect cutOutRect = Rect.fromLTWH(
-      rect.left + width / 2 - newCutOutSize / 2 + borderOffset,
-      rect.top + height / 2 - newCutOutSize / 2 + borderOffset,
-      newCutOutSize - borderOffset * 2,
-      newCutOutSize - borderOffset * 2,
-    );
-
-    canvas
-      ..saveLayer(
-        rect,
-        backgroundPaint,
-      )
-      ..drawRect(
-        rect,
-        backgroundPaint,
-      )
-      // Draw top right corner
-      ..drawRRect(
-        RRect.fromLTRBAndCorners(
-          cutOutRect.right - newBorderLength,
-          cutOutRect.top,
-          cutOutRect.right,
-          cutOutRect.top + newBorderLength,
-          topRight: Radius.circular(borderRadius),
-        ),
-        borderPaint,
-      )
-      // Draw top left corner
-      ..drawRRect(
-        RRect.fromLTRBAndCorners(
-          cutOutRect.left,
-          cutOutRect.top,
-          cutOutRect.left + newBorderLength,
-          cutOutRect.top + newBorderLength,
-          topLeft: Radius.circular(borderRadius),
-        ),
-        borderPaint,
-      )
-      // Draw bottom right corner
-      ..drawRRect(
-        RRect.fromLTRBAndCorners(
-          cutOutRect.right - newBorderLength,
-          cutOutRect.bottom - newBorderLength,
-          cutOutRect.right,
-          cutOutRect.bottom,
-          bottomRight: Radius.circular(borderRadius),
-        ),
-        borderPaint,
-      )
-      // Draw bottom left corner
-      ..drawRRect(
-        RRect.fromLTRBAndCorners(
-          cutOutRect.left,
-          cutOutRect.bottom - newBorderLength,
-          cutOutRect.left + newBorderLength,
-          cutOutRect.bottom,
-          bottomLeft: Radius.circular(borderRadius),
-        ),
-        borderPaint,
-      )
-      ..drawRRect(
-        RRect.fromRectAndRadius(
-          cutOutRect,
-          Radius.circular(borderRadius),
-        ),
-        boxPaint,
-      )
-      ..restore();
-  }
+  void paint(Canvas canvas, Rect rect, {TextDirection? textDirection});
 
   @override
-  ShapeBorder scale(double t) {
-    return ScannerOverlay(
-      borderColor: borderColor,
-      borderWidth: borderWidth,
-      overlayColor: overlayColor,
-    );
-  }
+  ScannerOverlay scale(double t);
+
 }