A Behavior Authentication Method Using Wi-Fi BSSIDs around Smartphone Carried by a User

In recent years, numerous people have purchased smartphones and have become accustomed to carrying the devices with them at all times. Most advanced smartphones are now equipped with a variety of sensors that constantly measure and catch information such as geographical location, temperature, humidity, and Wi-Fi data. Among other things, such Wi-Fi data includes service set identifiers (SSID) and basic service set identifiers (BSSID), which are device information used by wireless local area network (LAN) access points. Thus, under normal circumstances, when a user´s smartphone is within range of an access point, the device and the access point exchange information. The kinds of data exchanged relate to the user´s geographical location histories, and can possibly be used to characterize the user´s behavior. Accordingly, in this paper, we propose a personal authentication technique that uses such Wi-Fi information characteristics.