Recovery codes are often provided when you enable 2FAVícefázové ověření (též vícefaktorové, anglicky multi-factor authentication) je v informat... More. They are a last resort when you lose your phone, authenticator appA phone app that generates short one-time codes for safer login. More, or security keyA small physical key for safer login, often using USB, NFC, or Bluetooth. More. They should be stored safely and outside the device they protect.
Why it matters: Without recovery, good security can lock you out of your own account.
