Materials:-

Arduino UNO  : https://www.flyrobo.in/arduino_uno_r3_with_cable_for_arduino_uno?tracking=5c723900abvrl

Relay Module  : https://www.flyrobo.in/5v_single_channel_relay_module?tracking=5c723900abvrl

RFID Sensor  : https://www.flyrobo.in/rc522-rfid-13.56mhz-reader-writer-module?tracking=5c723900abvrl

Solenoid Lock  : https://www.flyrobo.in/electronic-lock-catch-door-gate-12v?tracking=5c723900abvrl

LED  : https://www.flyrobo.in/1pcs-white-transparent-led-light-diode-5mm-light-emitting-diod?tracking=5c723900abvrl

Buzzer : https://www.flyrobo.in/3.5-5.5v_standard_passive_buzzer_module_for_arduino?tracking=5c723900abvrl

Breadboard  : https://www.flyrobo.in/mini_solderless_breadboard__170_tie_points_for_arduino_diy_project?tracking=5c723900abvrl

Jumpers  : https://www.flyrobo.in/combo-of-3-type-jumper-cables-f-f-f-m-m-m?tracking=5c723900abvrl

//RFID Solenoid Lock

#include <SPI.h>
#include <MFRC522.h>
 
#define SS_PIN 10
#define RST_PIN 9
#define LED_G 5 //define green LED pin
#define LED_R 4 //define red LED
#define RELAY 3 //relay pin
#define BUZZER 2 //buzzer pin
#define ACCESS_DELAY 2000
#define DENIED_DELAY 1000
MFRC522 mfrc522(SS_PIN, RST_PIN);   // Create MFRC522 instance.
 
void setup() 
{
  Serial.begin(9600);   // Initiate a serial communication
  SPI.begin();          // Initiate  SPI bus
  mfrc522.PCD_Init();   // Initiate MFRC522
  pinMode(LED_G, OUTPUT);
  pinMode(LED_R, OUTPUT);
  pinMode(RELAY, OUTPUT);
  pinMode(BUZZER, OUTPUT);
  noTone(BUZZER);
  digitalWrite(RELAY, LOW);
  Serial.println("Put your card to the reader...");
  Serial.println();

}
void loop() 
{
  // Look for new cards
  if ( ! mfrc522.PICC_IsNewCardPresent()) 
  {
    return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial()) 
  {
    return;
  }
  //Show UID on serial monitor
  Serial.print("UID tag :");
  String content= "";
  byte letter;
  for (byte i = 0; i < mfrc522.uid.size; i++) 
  {
     Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
     Serial.print(mfrc522.uid.uidByte[i], HEX);
     content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
     content.concat(String(mfrc522.uid.uidByte[i], HEX));
  }
  Serial.println();
  Serial.print("Message : ");
  content.toUpperCase();
  if (content.substring(1) == "83 23 38 BB") //change here the UID of the card/cards that you want to give access
  {
    Serial.println("Authorized access");
    Serial.println();
    delay(500);
    digitalWrite(RELAY, HIGH);
    digitalWrite(LED_G, HIGH);
    delay(ACCESS_DELAY);
    digitalWrite(RELAY, LOW);
    digitalWrite(LED_G, LOW);
  }
 
 else   {
    Serial.println(" Access denied");
    digitalWrite(LED_R, HIGH);
    tone(BUZZER, 300);
    delay(DENIED_DELAY);
    digitalWrite(LED_R, LOW);
    noTone(BUZZER);
  }
}

Credit – Viral Science – The home of Creativity