Walmart is scaling back on its self-checkout machines at two stores, as more retail giants are reducing the self-service option at their stores, citing an effort to combat theft. A Walmart in a suburb ...

You know the ones I'm talking about? You're in a grocery store and there's, say, twelve checker stations. One or two of them boasts signage that says, 20 Items or Less; or maybe it's 30 Items or less.