Biometrics (fingerprints, face ID) are convenient but not secrets—they can be compelled, copied, or left on glass. Hardware tokens (YubiKeys) are secure but external. The Lelu method is neither. It is : the key is made of the same stuff as the lock.
A password like Summer2024! meets all the requirements, but it can be cracked in seconds by a dictionary attack combined with seasonal trends. Conversely, a password like M#9vR$2qL!p is secure but impossible to remember. Lelu Love Passwords BETTER