I'm a beginner and I love the Arduino! This is a project for beginners like myself! :)
When the RFID-RC522 scans the card, the card's key will appear in the serial monitor. And if the NFC card is accepted, the green LED will be on, and if the card is not accepted, the red LED will be on.
This is the library for the project : https://github.com/miguelbalboa/rfid
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