Before revision: However, this would also have a number of negative side effects, which could outweigh the benefits, among them: increased (and prohibitive) costs reduced public transport convenience, leading to more car travel (and thus road deaths) making the queues of people waiting for screening vulnerable to attacks creating a sense of fear and a call for further measures and reduced civil liberties Therefore, some experts recommend against such methods.
After revision: However, this would also have a number of negative side effects, which could outweigh the benefits, among them: increased (and prohibitive) costs reduced public transport convenience, leading to more car travel (and thus road deaths) making the queues of people waiting for screening vulnerable to attacks creating a sense of fear and a call for further measures and reduced civil liberties Therefore, most experts recommend against such methods.