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Johannes Schöning, Michael Rohs, Antonio Krüger
Spatial Authentication on Large Interactive Multi-Touch Surfaces
Adjunct Proceedings of the 3rd IEEE Workshop on Tabletops and Interactive Surfaces (IEEE Tabletop 2008), Amsterdam, the Netherlands, October 1-3, 2008 (bib)
  The exploitation of finger and hand tracking technology based on infrared light, such as FTIR, Diffused Illumination (DI) or Diffused Surface Illumination (DSI) has enabled the construction of large-scale, low-cost, interactive multi-touch surfaces. In this context, access and security problems arise if larger teams operate theses surfaces with different access rights. The team members might have several levels of authority or specific roles, which determine what functions and objects they are allowed to access via the multi- touch surface. In this paper we present first concepts and strategies to authenticate and interact with subregions of a large-scale multi-touch wall.
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