Reliable and Low Cost RFID Based Authentication System for Large Scale Deployment

Identification is very important nowadays; whether there is need to identify persons, animals or objects, RFIDs provide a very good solution to the problem of identification and authentication. No one can deny the importance of authentication, it is done at the airport, at the railway station, in the library etc, but usually it’s done manually. The proposed system is a low cost automatic identification and authentication system which can be deployed at the doors of the building to authenticate authorized people. RFID based system should be very low cost and reliable for large scale deployment, for example RFID deployment in an airport to identify every official and passenger. The proposed system aims to develop a very low cost RFID authentication system based on the low cost components already available in the market. The complete system costs less than $10 USD. This approach not only reduces the cost but also enhances the reliability and ease of maintenance of the RFID based authentication system. The system is also made resistant against any tampering attempt. The proposed system is also accompanied with the PC interfacing and database logging software; which can be used to see the authentication details of the authenticated tags and as well as logs all the authenticated tags with the date and time of authentication to a database. Low cost antenna is also designed to minimize the cost of the system. While keeping the cost low, an impressive range of 10 cm was achieved using passive RFID tags.