I don't know my dell security password

Using bios-pw.org (For Emergency/Out-of-Warranty)

1. Get System ID: On the locked Latitude 7280, enter incorrect passwords until you see a padlock icon and an 11-character system number.
2. Visit Site: On another device, go to https://bios-pw.org/
3. Enter ID: Type the 11-character system number into the website and click "get password".
4. Find the Code: Use the second code provided (labeled "Dell from serial number").
5. Enter Manually: Manually type this code into the locked laptop's prompt to unlock it.