The privacy issue is not high on the retail radar because it hasn't become an issue with the privacy advocates. YET. Our POPAI advocacy group has been digging into this at length and believe that we have got to come together as an industry on privacy guidelines proactively. We also need to ensure that we are very carefully rolling out these measurement systems and slowly but surely garnering consumer acceptance. History has shown us over an over again that people do not tolerate anyone tracking their information or behavior without some form of permission. There are some countries that make any kind of tracking completely illegal and we need to understand why--and be smart about how we respond. These tools are very, very important to our ability to ensure that shoppers are having a positive experience in our stores. I'm personally very fearful that some folks in our industry are going to run out with these tools full charge, create a huge privacy backlash and shut them down before we get the chance to use them for the better good. Hopefully, we'll be smarter than that.