If you have QR code identifier, use the following tips to improve QR readability:
- Make sure that there is no protective film on the panel camera
- The code must be valid at the time of use
- Sunlight should not fall on the camera
- Keep the code at the same horizontal level as the camera
- The distance from the camera to the code should be 25-40 cm
- Hold the code in a stationary position for 5 seconds