University of Hawaii

Electrical Engineering

Two-factor Authentication for Multi-touch Mobile Devices

Date: 2015-12-07           Add to Google Calendar
Time: 10:30am - 11:30am
Location: Holmes Hall 389
Speaker: Professor Yanchao Zhang

Multi-touch mobile devices have penetrated into everyday life to
support personal and business communications. Secure and
usable authentication techniques are indispensable for preventing
illegitimate access to mobile devices. In this talk, I will introduce
RhyAuth and TouchIn, two novel two-factor authentication
schemes for multi-touch mobile devices. RhyAuth requires a user to perform a sequence of rhythmic
taps/slides on a device screen to unlock the device. The user is authenticated and admitted only
when the features extracted from his/her rhythmic taps or slides match those stored on the device.
TouchIn works by letting a user draw on the touch screen with one or multiple fingers to unlock
his/her mobile device, and the user is authenticated based on the geometric properties of his/her
drawn curves as well as his/her behavioural and physiological characteristics. I will also talk about
the user experiments on Android devices, which show that both RhyAuth and TouchIn are highly
secure against various attacks and also very usable for sighted and visually impaired users.



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