RFID authentication tutorial.
RFID is a modern age based authentication system in which , there are two components which are RFID receiver and transmitter the RFID transmitter can be also two types which can be near range NFC or far range, in far range it has its own battery and produces ways in which are received by RF receiver and it detects who the person is by the user ID of card similarly and the near range called it has no battery and as soon as it comes in the range of RFID receiver of RFID receiver produces electromagnetic waves which conduct electricity in RFID cards, to do it also sends wave electromagnetic waves are received by RFID reciever, the RFID tag sends unique UID or alphanumeric code which is how the rfid receiver identifies the person, the frequency of the RFID reciever is 13.56MHz .
This is also useful in many other practical ways such as ATM cards, room cards in hotel, employees attendance etc.
