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In public spaces, there are a number of different contents such as visitors, physical information resources, and virtual information resources via their embedded output devices (e.g., displays and speakers). Therefore, we might unexpectedly enter the public spaces that have our unfavorable characteristics (e.g., dismal and dangerous) and/or our unwanted information. For this problem, we have proposed a model and architecture of "Secure Spaces", which provide access control over public outputdoi:10.14864/softscis.2008.0.370.0 fatcat:ja754qdbprf4vgoxvl3bb5isli