The author of the letter “Walmart launches dragnet,” (Sept. 17) should try shopping at Costco: They check everyone. And not only that, you have to pay Costco to be able to shop there. Try buying a DVD or stereo in a sealed box. They open it up at checkout to make sure you didn't slip something inside it. And I mean sealed. So what is justified? Is that legal? I’d rather shop at Walmart.