A secondary account and recovery code are used to reset the primary account and password on an iPhone after it has been locked due to failed login attempts. Fingerprint, pattern, facial recognition and PIN code are biometric or numeric methods that can be used to unlock an iPhone, but they are not helpful if the device has been permanently locked. Verified References: https://support.apple.com/en-us/HT204306 https://www.comptia.org/certifications/a