The implemented attendance system with is useful for following applications
q Attendance system in educational institutions and other work places.
q Bank locker secured access.
q General frame work to implement any other RFID based applications.
q Ware houses and storage places where lot inventory movement is expected.
Advantages of the present implementation
q Low cost solution
q With little software modification extensible to any other microcontrollers.
Disadvantages:
(1) Since there is no other authentication mechanism, if some picks of some working card then he gets the full access
(2) The internal EEPROM has limited capacity so the number of events are also limited by it.
Future scope:
o A hex key pad can be interfaced to microcontroller board by which user can enter his password then only the lock can be opened. This ensures even if some one has card then also without the password he can’t get access.
o Connection to PC and development of PC side software to read from microcontroller
o Implementing the security systems with different levels by using different types of mifare cards.
o Cryptanalysis of the link between the card and reader.
o Study of other RFID techniques for better service and security.
o Interfacing the system with a GSM so that data can be transmitted through messages.
It seems to me all of them are really brilliant!
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The purpose of the Reader component is to activate and power the tag, demodulate the response, and prepare the signal for the microcontroller. The components of this reader are: the antenna, signal generator, peak detector, low pass filter, and voltage comparator.
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