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If airport security scanners of any kind (xray, thermal, whatever else they use) looked at two items:

  • A printed paper textbook
  • The same printed paper textbook into which we have inserted a regular folded US letter-sized paper with something written on it with a pencil, pen, marker, etc.

Could the security be able to detect the difference between the two?

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Are you planning on trying to smuggle something through airport security? –  Kyle Kanos May 14 at 18:32
Hope you're using a proxy. –  BMS May 14 at 19:41
The same answer here applies: physics.stackexchange.com/questions/112726/… Just plug in different numbers. And don't smuggle illegal things. –  Davidmh May 15 at 8:25
If they are using a laser system they possibly could. I doubt they would because it'd be expensive, huge, and could possibly kill people. –  Steven Walton Aug 24 at 2:34

1 Answer 1

No, it would look exactly the same as far as the x-ray is concerned.

Think x-ray passing through paper and ink.


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