Never underestimate the stupidity of bureaucrats......
...or actually looking at this another way, never underestimate their deviousness in creating additional unnecessary work that they can use to justify increasing the bureaucracy....
...these measures are no more about security than an episode of Blue Peter is about operation Yewtree...!
It's just plain and simple about $$$$ from pockets into other pockets....nowhere can anybody rational really truly think this ludicrous exercise will stop a serious threat....one with a real genuine desire to do damage and launched by an organised and trained/equipped criminal or terrorist group.