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layout default-layout
title How to check the camera permissions programmatically in Dynamsoft Barcode Reader JavaScript SDK?
keywords JavaScript, JS, camera, permission
description How to check the camera permissions programmatically in Dynamsoft Barcode Reader JavaScript SDK?
needAutoGenerateSidebar false

How to check the camera permissions programmatically in Dynamsoft Barcode Reader JavaScript SDK?

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Starting from version 9.6.10+, you can utilize the testCameraAccess method to check the camera status programmatically.

For versions older than 9.6.10, you can check the status using a try-catch block as shown below:

try {
  await scanner.open(); // or 'await scanner.show()'
} catch(e) {
  if(e.name === "NotAllowedError") {
    // it means the user denied permission  
    // add your code here to guide users to grant permission
  }
}

In case permission is denied, you can prompt the user (using an alert or something similar) to manually grant permission for your website to access the camera via the site settings.