Also, I did not mean to sound sarcastic here. I really wonder that. Because one would assume that behind specific security policies there's some study, stats, some data to support them. Which makes me curious how come some banks, here, just rely on bored security personnel, and others treat you as if you're entering a top secret facility right out oaf a Sci-Fi movie. It makes little sense to me, and makes me suspicious there are a lot of arbitrary decisions behind these policies. But, who knows.