Airport security staff consent to this type of testing at hiring time so testing can be random, and not just anyone can try to sneak a weapon through security to see if it's caught as "a test".
Perhaps a similar approach that allows randomness with some sort of agreement with the maintainers could have prevented this issue while preserving the integrity of the study.
Perhaps a similar approach that allows randomness with some sort of agreement with the maintainers could have prevented this issue while preserving the integrity of the study.