Feed Schneier: Hacking Gesture-Based Security (schneier.com)
Interesting research: Abdul Serwadda, Vir V. Phoha, Zibo Wang, Rajesh Kumar, and Diksha Shukla, "Robotic Robbery on the Touch Screen," ACM Transactions on Information and System Security, May 2016. Abstract: Despite the tremendous amount of research fronting the use of touch gestures as a mechanism of continuous authentication on smart phones, very little research has been conducted to evaluate how...