They are not law enforcement, they can't do crap, or even stop you, so whats the problem? Once I pay for whatever is in my bag, it's the same as a purse/backpack or wallet, it's my personal property now, so you can piss off. I look them right in the face, smile and wave as I walk out the door, BB, walmart etc, don't even bother trying to stop me anymore.
My thoughts 100%. I don't shop at Best Buy anyway, and them treating their customers like criminals with the receipt check is one of many reasons why.