Rekimoto’s Pick-and-Drop (PND) cross-device transfer technique is commonly used to support multi-surface object transfer, for instance, between a multi-touch tabletop and tablet, due to its easily understood metaphor that emulates object movement in the physical world. Current multi-surface implementations of PND provide little to no feedback during the transfer process, creating confusion during transfer. This video demonstrates two visual feedback techniques, Object Shadow (OS) and Object-plus-Arm Shadow (O+AS), designed to address this issue by visually representing the transferred object and its “owning” user during the transfer process. This demo was created by University of Waterloo's Stacey Scott and Guillaume Besacier.
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Stacey D. Scott, Frank Cento, Nippun Goyal, Julie Tournet, Guillaume Besacier. In Proc. CHI'14, April 26–May 1, 2014, Toronto, Ontario, Canada.