To add a camera or sync module, you will need to enter its serial number either manually or using your camera to scan a QR code. To scan a QR code, the Blink app requires permission to access the camera on your mobile device. You can learn how to find the serial number and QR code of your device here.

When after granting this access you experience problems scanning the serial number, try the following to resolve the issue.

• Position your mobile device closer to or farther away from the QR code on your Blink device.
  It's sometimes necessary to experiment with different distances and angles between your Blink device and camera lens, to obtain optimal focus to scan the QR code.
  
  
• Adjust the brightness on your mobile device.
  If the brightness on your device is set too high or low, you may experience problems scanning the code. For example, if you're in a well lit setting try increasing the brightness, or lower it when in a darker environment.
  
  
• Disable "Dark Mode"

  iOS 1. Open Settings > Display & Brightness. 2. Select "Light" to turn off Dark Mode. You can also turn off Dark Mode from the Control Center.

  Android 1. Open the Settings app. 2. Click “Display” and then toggle “Dark theme” off. You can also turn off the Dark theme from the Quick Settings.

  
  
• Move to an evenly lit area.
  You will have greater success scanning the QR code in evenly lit environments without bright lights or direct sunlight.
  
  
• If using a mobile phone, try cleaning the camera lens or using a tablet which has a larger screen.
  
  
• Scan the QR code on the Blink box label which may produce better results.