I thought Circuit City was private property and entry carried an implied consent to have one’s bags searched. I always cooperate with security personnel at stores and have never been unduly hasseled.
I am starting to waver on my general agreement with that given all that has been posted here. Even if there is any implied consent or if the sale contract of adherence has such a clause indicating consent, it can be overridden by law and made unenforceable. For example, good luck to the ink jet manufacturer in my state who gives you a contract with your printer, or license with the software, that prohibits you from refilling or remanufacturing the toner cartridges. The law expressly renders such terms unenforceable as a matter of public policy. It’s probably the same in yours as I believe all states go off the Uniform Commercial Code. In any case it is unenforceable of a judge or jury decides it’s unconscionable.