Dutch Roll hits the problem squarely.
As far as crew are concerned, ID checking is a far more appropriate procedure. Is this guy who he says he is and does he have a legitimate reason to be here TODAY? Companies are going to have to be involved with supply of names of those who should be there "TODAY" if you are not on TODAY's list, go away.
Those of us who go through the US regularly, are used to electronic fingerprinting, on entry. What is wrong with doing the same on exit. Scan the print, data base throws up the corresponding photo and immigration data, walk through.
No amount of checking and confiscation has or ever will, stop the few cases of deliberate "aircraft destruction by pilot", Egyptair, ATR Algeria (?), Silk Air, to name a few. Ergo it is a waste of time and energy to be knocking off the Capt's underarm deodorant.
What needs to be done is to ensure that ALL those with access to the aircraft have an appropriate level of scrutiny. This can only be done in segregated facilities.
All personnel with unlimited access need to be background checked, in addition to the "Daily Access check".
All those without background checking (including passengers) need to be restricted and subject to rigorous screening. Segregation of facilities is necessary to allow the effective identification of the "Daily Authorisised Personnel List" and to eliminate arguments as to percieved differing levls of scrutiny.
In the meantime, as has been said, it is pointless antagonising the Goon's, get active with people who can make a difference.
Maui