Abstract: A computer system reports “logical usage pattern data” and location information in a Device Report; in addition, another computer system reports MAC addresses associated with mobile device in Network Device reports; the Device Reports and Networks Reports are correlated based on various factors; if a set of Device Reports and Network Reports correlate, then a Device Identifier is created and sent to the corresponding mobile device; the Device Identifier may then be used to identify the mobile device, such as when the MAC address is inaccessible. The Device Identifier may be associated with other devices used by the user of the mobile device. Behavioral information associated with all the devices may be obtained and behavioral patterns determined. Content served to the mobile device may then be optimized based on the determined behavioral patterns.