In this paper we propose a new biometric measure to authenticate the user of a smartphone:
the movement the user performs when answering (or placing) a phone call. The biometric …

We address two distinct problems with de facto mobile device authentication, as provided by
a password or sketch. Firstly, device activity is permitted on an all-or-nothing basis …

Abstract Due to the frequency with which smartphone owners use their devices, effortful
authentication methods such as passwords and PINs are not an effective choice for …

Mobile users are often faced with a trade-off between security and convenience. Either users
do not use any security lock and risk compromising their data, or they use security locks but …

We introduce the notion of implicit authentication–the ability to authenticate mobile users
based on actions they would carry out anyway. We develop a model for how to perform …

While body movement patterns recorded by a smartphone accelerometer are now well
understood to be discriminative enough to separate users, little work has been done to …

This paper introduces DIALERAUTH-a mechanism which leverages the way a smartphone
user taps/enters any text-independent 10-digit number (replicating the dialing process) and …

User authentication is important to protect sensitive and private information for smartphone
users. We propose Waving Authentication (WA) which is a motion gesture authentication …

Smartphones have become the standard personal device to store private or sensitive
information. Widely used as every day gadget, however, they are susceptible to get lost or …

We present the results of an MTurk survey (n= 383) on the reasons for using and not using
biometric authentication systems on smartphones. We focused on Apple's Touch ID as well …