23. A mobile device comprising: a memory storing an application that uses the wireless sensor device to receive wireless sensor data from wireless communication between the mobile device and multiple electronic devices; a wireless sensor device; and a processor coupled to the memory, wherein the processor is configured to execute the application to form information units using the wireless sensor data, to infer user context using the information units, to compute an entropy metric based on the user context, and to create social profiling based on the entropy metric and at least one user context characteristic, the information units comprise wireless features including entropy features and at least one of count features and semantic features, each information unit comprises a minimum window size for capturing the wireless features, and the entropy features comprise a diversity of wireless readings reflecting contextual characteristics from the multiple wireless devices.
24. The mobile device of claim 23 , wherein the wireless sensor data comprises at least one of time, media access control (MAC) address, device name, device class and received signal strength indication (RSSI), and the processor is configured to execute the application to filter the information based on at least one of an RSSI signal threshold and duration of a sensed device.