Network 2-Factor Access Control system based on RFID security control system/ [Choi, Kyong-Ho;Kim, Jong-Min;Lee, Dae-Sung;] / Convergence Security Journal
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Network Group Access Control system using piggy-backing prevention technique based on Infrared-Ray/ [Kim, JongMin;Choi, KyongHo;Lee, DongHwi;] / Convergence Security Journal