There are many reasons that the detector cannot scan the QR code marked by a laser marking machine.
Reason 1: The QR code settings are empty, the operator didn’t fill in the content they need, or it redirects to a wrong URL.
Solution: Check if it is the QR code content issue.
![This image is a QR Code in Ezcad software](https://bravolaser.com/wp-content/uploads/2022/07/ezcad-fiber-laser-marking-machine-1024x791.png)
Reason 2: The QR code marked by the laser marking machine is blurry.
Solution: Solution: It is because of the material. If the material is plastic, we can adjust the settings in Ezcad2, like setting the speed between 1500 and 3000 and power to 10% – 20%. We can increase the power and lower the speed if it is metal.
![This image is a QR Code in Ezcad with the settings of Speed and Power](https://bravolaser.com/wp-content/uploads/2022/07/laser-marking-machine-1024x597.png)
Reason 3: The QR code didn’t be hatched well.
Solution: Make the QR code in Ezcad2 directly.
Then how to make a QR code in Ezcad2?
Please check the below video for your reference.