Yup, my guess is that it was causing time-consuming false positives when jumbled together with everything else in the bag, so they set it aside. That way they'r

Yup, my guess is that it was causing time-consuming false positives when jumbled together with everything else in the bag, so they set it aside. That way they're easier to verify as safe, since they're isolated and laid flat, and if a closer inspection is required they don't have to go through the whole bag. I'm guessing that's the same reason laptops are scanned separately as well.