Hmm. I know what you can do! Get a uniform like a best buy or comp usa technician. Then go in and begin to "work on" a computer.
Gut the system of everything you need, then bolt for the door. You should make it, unless you are "chunky".
There was this story on boners.com about a guy who walked into a store like compusa, and the guy at the counter was dumb. He asked for a 256mb DDR module, and the guy looked puzzled, and picked up the entire box of memory modules and said: "That will be $67.00, sir."
He forked over the cash, dumbfounded, walked out of the store calmly, then bolted down the street as fast as he could towards his house. When he got him, he counted like 76 modules! What a bargain.