[IEEE 2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops - Washington, DC, USA (2009.04.6-2009.04.8)] 2009 5th International Conference on Testbeds and Research Infrastructures for the Development of Networks & Communities and Workshops - Localization, tracking, and automatic personal identification in GPS-denied environments A solution based on a rireless biometric badge