Abstract: The present invention addresses the problem of targeting advertisements to be displayed on customers' mobile devices who move through a physical location. A method for dynamic delivery of content to a user's portable device connected to an access point is disclosed which includes the steps of: analysing network traffic sent from the portable device via the access point; generating a profile for the user based at least in part upon the analysed network traffic and the location of the portable device; matching content to the user profile; and delivering the matched content to the portable device. A system for dynamically delivering content is also disclosed.