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I was recently out travelling, and I couldn't help wonder why I of all people was called to the side by a security officer of some sort at the airport, after we had landed and were heading for a cab.

It only took a few seconds, but I would love to know what made me stand out from the crowd.

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When people get nervous they sometimes touch there nose. Security officers are trained to notice these things. So maybe you touched your nose or did some other simple thing that got noticed.

But there are also just random checks to make it very difficult to predict when or when not you are checked.

> sometimes touch their nose

I genuinely don't understand that. I can't imagine what benefit that behaviour would ever have.

It's a way of hiding your face.

Sometimes my nose just itches.

It has no benefit, it's just behavior. Maybe it has something to do with your blood pressure / flow that will make your nose itch?

Could be my allergies selling me out. Didn't think of that. :)

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