Can I see underwear at the security gate of the railway station?

No, the security gate is also called metal detection gate, which is probably similar to the principle of mine detection. Using electromagnetic induction, x-rays are not emitted. After sensing enough metal, the door frame indicator lamp can further detect and display the position of metal (left and right, up and down). These security doors are set up to ensure the safe travel of passengers. They can detect contraband hidden in the human body. Security door is a detection device to detect whether people carry metal objects, also known as metal detection door. When the inspected person passes through the security gate, according to the weight, quantity or shape, the metal carried by the person exceeds the preset parameter value, and the security gate immediately gives an alarm and displays the metal position that caused the alarm, so that the security inspector can find the metal items carried by the person in time.

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