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city wall is a huge "Multi Touch" installation in center of helsinki.
it is build by Ubiquitous Interaction (Uix) research group of helsinki institut for technique information. the cit y wall shows the periodically the informations, photos of the city. with this interaction, the user can easily view, move, rotation and so on.
this is a part of IPcity project.
very interesting, isn' it ;D
video