Facebook ads are typically meant to sell you something. Tracking whether or not they actually work can be tricky, since people use Facebook on lots of different devices and often shop somewhere else altogether — like in an actual, physical retail store. To fix that problem, Facebook on Tuesday released an ad update specific to offline shopping. Facebook advertisers can now include an interactive map displaying their physical store locations as part of a carousel ad so users can find, and maybe even visit, the actual stores. Facebook will then use the phone’s location services to track how many users who saw the ad actually visited the store. Advertisers will then get that data to see if their Facebook ads attract shoppers to their brick-and-mortar stores. Read more at Recode.