This is such a bad idea! 1. You could place bombs on any number of civilians and kill them easily and instantly. 2. Every person has the right to a fair trial under the Universal Declaration of Human Rights, and if they are dead they can't really have that trial. 3. There are many ways to bring weapons into a secure place that won't detonate, for example a knife. This wouldn't explode, but if there was no visual checks you could bring them into the airplane and do major damage.
what if a terrorist sticks a bomb on an innocent person