Write UID RFID to eeprom

#include <LiquidCrystal_I2C.h>
#include <SPI.h>
#include <MFRC522.h>
#include <Wire.h>
#include <EEPROM.h>

#define SS_PIN 53    //Arduino Uno
#define RST_PIN 5

MFRC522 mfrc522(SS_PIN, RST_PIN);        // Create MFRC522 instance.
LiquidCrystal_I2C lcd(0x3F, 16, 2);



  
void setup() {
        Serial.begin(9600);        // Initialize serial communications with the PC
        SPI.begin();                // Init SPI bus
        mfrc522.PCD_Init();        // Init MFRC522 card
      
        lcd.begin(); 
}
void loop() 
{
  lcd.clear();
  lcd.print("Scan Your Card");
  // 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();
  

  
  String const teac = "95 A5 16 CB";
  String const stu = "25 C0 62 76";
  int addrTeac = 0;
  
  if (content.substring(1) == teac) //change here the UID of the card/cards that you want to give access
  {
    Serial.println("Authorized Access");
    for (byte i = 0; i < mfrc522.uid.size; i++) 
  {
    EEPROM.write(addrTeac,teac);
    teac = EEPROM.read(addrTeac);
    Serial.print(addrTeac);
    Serial.print("\t");
    Serial.print(teac);
    Serial.println();  
  }
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Authorized Access");
    lcd.setCursor(0,1);
    lcd.print("Welcome Teacher");
    delay (1000);
    lcd.clear();
    lcd.setCursor(0,1);
    lcd.print("AutoLock after ");
           for(int j=5; j>0; j--){
            lcd.setCursor (15,1); 
            lcd.print(j);
            delay (1000);
           }
  }
 
 else   {
    Serial.println("Access Denied");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Access Denied");
    lcd.setCursor(0,1);
    lcd.print("Card Not Regist");
    delay (2000);
    
  }
}

I have 1 RFID card as a teacher and the other students. I scan the card when a teacher, I want the data in the RFID ID into the eeprom. how RFID data conversion in order to enter into eeprom?
especially in this line

if (content.substring(1) == teac) //change here the UID of the card/cards that you want to give access
  {
    Serial.println("Authorized Access");
    for (byte i = 0; i < mfrc522.uid.size; i++) 
  {
    EEPROM.write(addrTeac,teac);
    teac = EEPROM.read(addrTeac);
    Serial.print(addrTeac);
    Serial.print("\t");
    Serial.print(teac);
    Serial.println();  
  }

need help please master. thanks

    EEPROM.write(addrTeac,teac);

The write() function writes one byte. It is the bytes from mfrc522.uid.uidByte that you want to write, NOT the crap from teac.

You do not want to write all the bytes to the same address. That would be pointless.