ESP32 RFID RC522 Card Reader (with LCD)

In this project, we will connect the MFRC522-based RC522 RFID module to the ESP32 via SPI and read the card/tag UID. This forms the basis for applications such as door locks, membership systems, and access control. We will display the read UID on an LCD screen and provide an example of comparing it with an authorized card list. **WARNING:** The RC522 operates only at **3.3V**; supplying 5V will burn out the module!