The principle of the security screening device is to display the items in the luggage box on the screen in the form of X-rays in order to identify suspicious items in time and eliminate possible dangers. It should be pointed out that although the X-ray radiation dose in the security inspection machine currently in use is very low, it usually does not affect human health, nor does it generally cause radiation pollution to objects and food. However, the internal radiation of the safety machine is still very large, and it can still cause some harm to the human body. In other words, if people enter the security inspection machine directly, their health will be affected.

The radiation of the electronic label protection curtain is mainly at the two ends, namely the entrance and the exit. Therefore, we should try to avoid directly facing the security screening curtain, do not stay on the security screening machine for too long, do not open the security screening curtain, or even put the body in the object. The correct operation is to wait for the safety items to slip away before being taken away. When passing the security check machine, parents with children should pay special attention to their children, so as not to open the security check curtain curiously, or even get into the security check machine to "pass" the security check curtain and cause unnecessary harm.

When going through the security check, you must not open the security screening curtain, or even put your body in the fetching operation, because the security screening curtain is specially designed, not ordinary rubber curtains, and is a protective device to prevent X-ray leakage. In addition, the information learned from the security staff, because the belt is not only the luggage of the passenger, if the curtain is opened at will, it will affect the scanned image of other luggage and cause the image to be damaged.