The landscape orientation of smartphones offers a better aspect ratio and extensive view for watching media and photography. However, it presents challenges of occlusion, reachability, and frequent re-gripping in one-handed interactions. To address these issues we took the opportunity of deformation gestures to interact with future flexible smartphones. A preliminary survey was conducted to understand one-handed landscape mode usage patterns. Then, the 1st study was conducted to identify 3 most preferred one-handed landscape mode grips. In the 2nd study, we gathered unique user-defined deformation gestures to identify the set of the most natural and intuitive gestures corresponding to each grip. We also found 3 gestures that can be performed in more than one grip. Finally, we discuss the influence of the grips on performing gestures.

This study is conducted and evaluated by PhD student Pranjal Borah.
Borah, P. P., & Sorathia, K. (2019, March). Natural and Intuitive Deformation Gestures for One-handed Landscape Mode Interaction. In Proceedings of the Thirteenth International Conference on Tangible, Embedded, and Embodied Interaction. ACM.