The big advantage of allowing only passengers access to the concourses is that the load of people requiring screening is less. Personally questioning everyone in detail is a major step that should be included if the security level is suppose to be high. The 2 questions now used are a joke. They should also ask if "anyone, KNOWN or unknown, has given you anything." The last case of a bomb put in someone's luggage was given by a boyfriend who hated Israel AND his Irish girlfriend.