The Android password can be complex, with 4–16 characters in length. There are 94 possible characters per space, with users having the choice of lower/uppercase letters, digits, and …

Abstract—Pattern lock is widely used as a mechanism for authentication and authorization on Android devices. This paper presents a novel video-based attack to reconstruct Android lock …

To achieve strong ecological validity, we implemented an Android screen lock application that uses the SysPal policies, and asked the participants to use it on their own phone for a day.

process to be notified when a Binder object dies. This is useful for de-allocating resources associated with the remote Binder object and used throughout the Android platform.

Although one is unlikely to ever want to brute-force an Android lock pattern, many do wonder about the relative strength of the lock pattern versus a multi-digit personal identification …

Lock patterns for mobile phone normally need to involve four dots or more. We may ask the students to design their lock patterns freely under the rules of setting the graphic lock in the …

Modern Android devices are required to use the Gatekeeper subsystem. It performs device pattern/ password authentication in a Trusted Execution Environment (TEE). Gatekeeper …