How to open a lock with QR code?

If you have a 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 when it is used;

• sunlight must not fall on the camera;

• keep the code at the same horizontal level as the camera;

• the distance between the camera and the code must be 25-40 cm;

• hold the identifier in a stationary position for 5 seconds.