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The authors examine a specific security problem in wireless body area networks (WBANs), what they call the one body authentication problem. That is, how can they ensure that the wireless sensors in a WBAN are collecting data about one individual and not several individuals. They explore existing solutions to this problem and provide some analysis why these solutions are inadequate. Finally, the authors provide some direction towards a promising solution to the problem and how it can be used to create a usably secure WBAN.
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