Changhun Jung, RhongHo Jang, DaeHun Nyang, KyungHee Lee

KIPS Transactions on Computer and Communication Systems, Vol. 6, No. 12, pp. 497-506, Dec. 2017
10.3745/KTCCS.2017.6.12.497,   PDF Download:
Keywords: Authentication Protocol, PIN, Smartphone, Vibration, Accelerometer
Abstract

There have been previous researches about user authentication by analyzing the user's gait or behavior or action using the accelerometer sensor of smartphone, but there was a lack of user convenience to apply PIN entry. In this paper, we propose the technique for PIN entry without a touch on smartphone, the technique uses an accelerometer sensor and a vibration sensor built in the smartphone to enter the PIN. We conducted a usability experiment using the proposed technique and confirmed that the usability can be increased according to users become accustomed to this technique and that the users can enter PIN with 12.9 seconds and a probability of 100% on average. Also we conducted a security experiment and confirmed that an attack success rate is 0% when an attacker attacked the user using the recording attack and that it is more secure than the previous PIN entry technique. As a result, we was able to confirm that this technique can be used sufficiently.

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