'Multi-layered' security

In reality, this term is a way to cover the butts of incompetent and/or over-reaching agents. This testamonial from the Vancouver Sun is a case in point:

I opted out, and no one patted me down. Why? Probably because they were too busy patting down every second or third passenger who walked through the body scanners. Leave a pen, handkerchief or wallet in your pocket, and you get a body scan and a pat-down.