Abstract:Wearing smartwatches becomes increasingly popular in people's lives. This paper shows that a smartwatch can help its bearer authenticate to a login system effectively and securely even if the bearer's password has already been revealed. This idea is motivated by our observation that a sensor-rich smartwatch is capable of tracking the wrist motions of its bearer typing a password or PIN, which can be used as an authentication factor. The major challenge in this research is that a sophisticated attacker may imit… Show more
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