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As a user moves to different locations, how to make the communication service in use follows the user to the current location without being broken off depends on the support of Personal Mobility. Therefore, supporting personal mobility for the "Follow-me service" is the goal of this research. The authors integrate Radio Frequency Identification (RFID), and SIP Express Router (SER) to create a VoIP system which can achieve personal mobility. In the proposed system, as soon as the user moves to different locations, the sensors of the doors/locations can read the RFID Tag of the user and the server can activate an according phone and register to the SER immediately.
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