Intuitive gesture set on touch screen for ad-hoc file sharing among multiple mobile devices

As people increasingly capture more digital media, users want to share them easily without complex setup and manipulation. We propose an intuitive and direct means for sharing files between mobile devices: placing devices together and dragging a file directly from one screen to the other. Our approach allows users a mutual operation, and it is scalable to number of devices. We designed several such intuitive gestures for manipulating files, as we would like to propose a standard gesture vocabulary set used for multiple devices. We built a prototype application that demonstrates the concept.