The RFID tag involved in this project is passive tag. Passive tags are used in this project because it can be much smaller and cheaper than active. So it is ideal for this system and can operate effectively. Another advantage is their longer shelf life, where as an active tag batteries may last only a few years, a passive tag could in principle be read many decades after the chip was manufactured. Mifare 4k MF1ICS70 model of tag is choosing as it very cheap and it have internal memory about4 kbyte besides this tag already used by most university. At this moment, internal memory inside the tag is not used yet.
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