    @article {agudo2013,
	title = {A Privacy-Aware Continuous Authentication Scheme for Proximity-Based Access Control},
	journal = {Computers \& Security},
	volume = {39 (B)},
	year = {2013},
	month = {11/2013},
	pages = {117-126},
	publisher = {Elsevier},
	abstract = {<p>Continuous authentication is mainly associated with the use of biometrics to guarantee that a resource is being accessed by the same user throughout the usage period. Wireless devices can also serve as a supporting technology for continuous authentication or even as a complete alternative to biometrics when accessing proximity-based services. In this paper we present the implementation of a secure, non-invasive continuous authentication scheme supported by the use of Wearable Wireless Devices (WWD), which allow users to gain access to proximity-based services while preserving their privacy. Additionally we devise an improved scheme that circumvents some of the limitations of our implementation.</p>
},
	issn = {0167-4048},
	doi = {10.1016/j.cose.2013.05.004},
	author = {Isaac Agudo and Ruben Rios and Javier Lopez}
}
