It is understood that, under normal circumstances, after the identity check, boarding passengers need personal baggage and articles three security and security checkpoints, passenger only "break" the three before boarding. Among the various modes of transportation, the plane is the most rigorous security check. For the security level, the risk level is high, the airport will generally be placed in depth a variety of testing instruments, so as to ensure the safety, in addition to the X - the most common and hand-held metal detector terminal, including liquid detector, explosion-proof detector and metal detection door etc.. As far as personal security is concerned, at present, metal detectors are widely used in domestic airports.

For security items security door detection, lighter pass airport security, not because there are lighter flammable liquids, but because of all the lighter inside has a metal gear standard, the lack of the gear, basically is a fire. Therefore, as soon as the lighter passes through the security door, the machine reads the metal interference immediately and sends out an alarm. Especially for small metal products particularly sensitive to the Metor series security door, the lighter was measured almost 100%. So, no matter how small metal objects are, they are checked out. Small lighters on the plane's threat is particularly large, in which the harmony of the total Hao reminded everyone, do not have a lucky mentality, to comply with the provisions of airports and other public places, for everyone's safety is a comfort.

For metal crutches, experts have pointed out that crutches are likely to be carried on board. Crutch above has a screw in place, it is a casing, can adjust the length, can lift the inner pipe can be made into a slope, it becomes a "tube", similar to the tubular dagger, this kind of thing is a limitation in the metal detection door. The metal objects detected by each security door are debugging a detection sensitivity for different metal items were adjusted to different extent, in order to achieve the purpose of accurate detection. Each metal crutches have metal content requirements, security doors can stick to detect metal content by adjusting the sensitivity is too much, which can more accurately determine the crutch without hide other metal objects.

In the meantime, Mr Hao of the China security office has expressed his views on the "6. 29" time. He said, in fact, the existing instruments, equipment and regulations can prevent these dangerous articles from being placed outside the security line. The premise is that rules and regulations, people's responsibility, the existing instruments and equipment, these three can not be less. China Security Association experts also pointed out: "the hijacking revealed the problem is that we do not attach importance to security checks in many places.". In fact, security inspection is an indispensable and important means in security. Security check is camera and alarm can not be replaced.