15 Arduino RFID Smart Student Card | RFID Technology | RFID Security | RFID Scanner | RC522

15 Arduino RFID Smart Student Card | RFID Technology | RFID Security | RFID Scanner | RC522


RFID technology is a very famous and time-saving technology. It helps to read the data in a few milliseconds.
In this tutorial, we will learn how to use an RFID card read and write module RC522. We will also develop a program for smart student ID cards where we store and retrieve student data.

RFID means radio-frequency identification. RFID uses electromagnetic fields to transfer data over short distances. RFID is useful to identify people and to make transactions. RFID is a technology that surrounds us every day. It's in our credit cards, passports, and products. RFID is essentially a form of electronic bar tag, in smaller sizes. A nearby reader can use radio waves to read the RFID tag without visual contact. Some RFID tags can be powered by a battery, but many RFID tags aren't self-powered. They're powered by the electromagnetic field created by the RFID reader/writer.

The RC522 RFID reader/writer module is a great choice for RFID-based Arduino projects. It is low power, low cost, very rugged, easy to interface, and extremely popular among students. It usually comes with an RFID card tag and a key tag with 1 KB of memory. It can write or read a tag, which means you can store any information in it and retrieve it. The RC522 RFID reader module is designed to create a 13.56MHz electromagnetic field and communicate with RFID tags.



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