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In this research, an active RFID-based personal navigation system for multi-story indoor environments is proposed. Without using complicated three-dimensional positioning algorithms, we employ an existing two-dimensional positioning engine and equip the system with the capability of seamless positioning handoffs between different floors. The handoff process is triggered by monitoring the received signal strength indicator (RSSI) value observed by the RFID reader deployed in the stairway. Thedoi:10.1109/bwcca.2011.76 dblp:conf/bwcca/LinCH11 fatcat:xl52kyz555cxdil5j5gc6oihve