In this paper, a Digital Campus Security System (DCST) has been designed and implemented base on the RFID, GPS and GSM network. DCST reads the RFID tags and sends information to lpc2148.processor gives alerts through GSM network. If any invalid RFID (Thief) information comes into mobile the authors will get the real-time tracking for valuables. Where the thief arrives anyone access control node, it would be blocked. User can also manage its own valuables such as lending and recovery operation through the web manager centre.