Most vehicles only require a key to authenticate the driver. However, with vehicles becoming portals to digital information, many drivers might find this authentication method inadequate. In this paper we explore using tap sequences on the back of the steering wheel to authenticate drivers. Our results indicate that drivers can learn to use an authentication system that uses such taps, and that the system could provide good protection from shoulder-surfing attacks.
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Kun et al. (2013) studied this question.
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