# Configure the Scan Region Style

## Visibility

After you call `setScanRegion`, the scan region is visible by default. You can hide it by calling `setScanRegionMaskVisible`.

<div class="sample-code-prefix"></div>
>- Objective-C
>- Swift
>
>1. 
```objc
[self.dce setScanRegion:[[DSRect alloc] initWithLeft:0.1 top:0.35 right:0.9 bottom:0.55 measuredInPercentage:YES]  error:nil];
[self.cameraView setScanRegionMaskVisible:NO];
```
2. 
```swift
try! dce.setScanRegion(Rect(left: 0.1, top: 0.35, right: 0.9, bottom: 0.55, measuredInPercentage: true))
cameraView.setScanRegionMaskVisible(false)
```

## Scan Region Mask Style

The scan region mask style includes the stroke color, stroke width, and mask color.

<div align="center">
    <p><img src="../../../assets/scan-region-style.png" width="70%" alt="scan-region-style"></p>
    <p>Scan Region Style</p>
</div>

<div class="sample-code-prefix"></div>
>- Objective-C
>- Swift
>
>1. 
```objc
[self.cameraView setScanRegionMaskStyle:UIColor.whiteColor strokeWidth:2 surroundingColour:[[UIColor darkGrayColor] colorWithAlphaComponent:0.65]];
```
2. 
```swift
cameraView.setScanRegionMaskStyle(.white, strokeWidth: 2, surroundingColour: UIColor.darkGray.withAlphaComponent(0.65))
```

## Laser

The scan laser is a light bar that moves up and down to indicate active scanning. It does not affect performance. It is hidden by default. When a scan region is set, the laser movement is limited to that region.

<div class="sample-code-prefix"></div>
>- Objective-C
>- Swift
>
>1. 
```objc
[self.cameraView setScanLaserVisible:YES];
```
2. 
```swift
cameraView.setScanLaserVisible(true)
```