Millions of people travel around the world every day. It’s the job of airport security to make sure all these people are safe. How do they do it? Let’s find out
X-ray Machines
One thing all airports have in common is x-ray machines for your carry-on items. You put your belongings on a conveyer belt that carries each item through an x-ray machine. The security screener inspects the image of your bag and its contents on the monitor. If you’ve seen the monitor you might know it looks like a jumble of colorful shapes but security screeners are trained to know that each color represents objects in certain categories: organic inorganic and metal.
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