  Internet of Things (IoT) is a distributed communication technology system
that offers the possibility for physical devices (e.g. vehicles home appliances
sensors actuators etc.) known as Things to connect and exchange data more
importantly without human interaction. Since IoT plays a significant role in
our daily lives we must secure the IoT environment to work effectively. Among
the various security requirements authentication to the IoT devices is
essential as it is the first step in preventing any negative impact of possible
attackers. Using the current IEEE 802.11 infrastructure this paper implements
an IoT devices authentication scheme based on something that is in the IoT
devices environment (i.e. ambient access points). Data from the broadcast
messages (i.e. beacon frame characteristics) are utilized to implement the
authentication factor that confirms proximity between two devices in an ad hoc
IoT network.
