BackTap: Robust Four-Point Tapping on the Back of an Off-the-shelf Smartphone

Cheng Zhang, Aman Parnami, Caleb Southern, Edison Thomaz, Gabriel Reyes, Rosa Arriaga, and Gregory D. Abowd. 2013. BackTap: Robust Four-Point Tapping on the Back of an Off-the-shelf Smartphone. In Proceedings of the Adjunct Publication of the 26th Annual ACM Symposium on User Interface Software and Technology (UIST ‘13 Adjunct). ACM, New York, NY, USA, 111-112.