A method and system are described for determining a location of a consumer within a retail establishment, or other geographical proximity. The method and system use a portable computing device (“PCD”) such as, but not limited to, a mobile phone. The system and method may leverage existing infrastructure, such as wireless routers, to assist the PCD and a remote server in communication with the PCD to determine a location of a consumer in possession of the PCD within a retail location. The system may comprise a PCD running a geo-network discovery (“GND”) module, a server running a service set identifier (“SSID”) verification and rules (“V/R”) module, a telecommunications network, and a wireless router configured to broadcast a unique SSID.