Information from location nodes is downloaded to a control center. A mobile device associated with a user located in a specific area at a geographical location is in communication at least one node, which is, in turn, in communication with at least one control center. The nodes communicate with each other wirelessly via radio frequency (RF) using Bluetooth™ protocol. A messaging system is used to send specific messages to mobile devices, according to the profiles of the users of the mobile devices and their location relative to the nodes. Data mining and commercial communications are possible for users associated with mobile devices in particular locations.