Why not yawn when passing through security at the airport?

Some actions such as whistling or yawning can cause passengers to be held at security gates at US airports.

The U.S. Transportation Security Administration (TSA) says airport security teams often use observation technology (SPOT) to screen passengers at customs.

In particular, actions such as whistling or yawning many times when passing through security gates can cause you to be held back for closer inspection. In addition, the habit of clearing his throat or blinking too quickly can cause passengers to be held at the airport.

Repeated yawning may result in passengers being held at the airport.

Because security guards may think you're showing signs of stress or fear, fidgeting when trying to hide something.

Besides, a few gestures such as frequently looking down, pale face because no makeup, clothes inconsistent with the weather and circumstances . can also cause passengers trouble at the customs gate.

Some people think that security clearance at the time of departure can make security staff sympathize and bypass many procedures so you can board the plane on time. However, the concept is completely wrong because at this time you may be listed as a passenger to note. You can even be late for a flight when you have to answer security questions from the security team.

New aviation law in the US requires passengers to provide DNA samples in case of being held at the airport security gate. If you refuse, you may face charges from the court.

In order to avoid the hassle of going through the airport security door, passengers should be at the airport about 2-3 hours before departure. You can wear your favorite outfit, but don't be too different. Also, be sure to check the airline's rules carefully to avoid carrying items that are easily recovered in hand luggage.