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Summary: Dynamic Portals: A Lightweight Metaphor
for Fast Object Transfer on Interactive Surfaces
Simon Voelker Malte Weiss Chat Wacharamanotham Jan Borchers
RWTH Aachen University
52056 Aachen, Germany
{voelker, weiss, chat, borchers}@cs.rwth-aachen.de
ABSTRACT
We introduce Dynamic Portals, a lightweight interaction tech-
nique to transfer virtual objects across tabletops. They main-
tain the spatial coherence of objects and inherently align them
to the recipients' workspace. Furthermore, they allow the ex-
change of digital documents among multiple users. A remote
view enables users to align their objects at the target location.
This paper explores the interaction technique and shows how
our concept can also be applied as zoomable viewport and
shared workspace.
ACM Classification: H5.2 [Information interfaces and pre-
sentation]: User Interfaces.--Interaction styles.
General terms: Design, Human Factors
Keywords: Interactive Tabletops, Orientation, Spatial Ar-
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