McDonalds uses this type of data in so many ways. When I worked for them, they uncovered a franchisee defrauding them and the IRS. This was when x86 POS systems

McDonalds uses this type of data in so many ways. When I worked for them, they uncovered a franchisee defrauding them and the IRS. This was when x86 POS systems were first replacing Scantron menu systems. This franchisee hired someone to customize the POS system to underreport sales. This affected both the tax collections, as well as franchise fees due. How was he found? Well, all food/paper sales were through one vendor that reports sales to the mothership. They could see that he was ordering enough supplies for X, while reporting Y sales. He skimmed about 10% extra over two years before they busted him. So for roughly $200K he lost all four franchises, and faced a huge tax issue. This type of data processing across all the McOpCo stores and franchises will be invaluable.