Abstract: A system for determining the position of users, stores, products, or brands inside one or more structures, such as a store, shopping center, cruise ship, etc. In some embodiments, the system utilizes an image capture module of a wireless device to capture information relating to an object disposed at a known location. The information regarding the location of the object is used to provide navigation information, product information, advertising information, and the like to the user while inside the structure. In other embodiments, a positioning system capable of determining the locations of RF signal sources within one or more structures and then using the determined locations of the RF signal sources to determine locations of users' wireless devices is provided.