A unique visitor refers to the number of customers that have visited an Associate at your store's Storefront for the first time. In other words, if a customer clicks on your storefront, they are counted as 1 unique visit. We then track that customer for 2 weeks. If that customer returns to your Storefront within 2 weeks of that first visit, they are not counted as another visit. If they visit your storefront after the 2 week period, they will be counted as a new unique visitor.