Metals that can pass through security gates mainly include stainless steel, titanium steel and other non-magnetic materials.
Security gate is a kind of equipment that detects whether people are carrying metal objects, and its working principle is mainly through the magnetic field induction to detect metal objects. Therefore, for some non-magnetic metal materials, such as stainless steel, titanium steel, etc., the security gate is usually able to detect and allow through normally. These metal materials are often used in life to manufacture jewelry, tableware, medical equipment, etc., so people carrying these metal items can usually pass through the security gate without any problems.
However, it should be noted that security gates have higher detection sensitivity and specificity for some specific metal materials, such as those used in dangerous goods like control knives and firearms. Therefore, even for non-magnetic metal items, if they are suspected of carrying dangerous goods, the security gates will sound an alarm and they need to cooperate with security personnel for further inspection.
Main Purpose of Security Checks
First of all, security checks can prevent terrorist attacks and other criminal activities. At airports, train stations, stadiums, and other public **** places, security personnel can rule out the possibility of carrying weapons, explosives, or other dangerous items by checking passengers' luggage and bodies. This helps protect the lives of large numbers of people and maintain social order.
Second, security checks can prevent the transportation of illegal goods. At border crossings and customs offices, security checkers can inspect the luggage and cargo of people entering and leaving the country to ensure that no contraband or restricted items enter the country. This is important to combat smuggling, drug trafficking and other illegal activities.
In addition, security checks can protect important facilities. For example, government agencies, military bases, and nuclear energy facilities often have stringent security measures in place to prevent unauthorized personnel from entering and causing damage or stealing classified information.