There are three ways to authenticate who are. Something you are; that’s your face, your fingerprint, your voice etc. Something you have; Back cards, Keys, smart cards etc. Something you know; Passwords, PIN codes, Your mother’s Maiden name etc. Most people are familiar with passwords but passwords are problematic, easy to remember passwords are often weak and easily guessed, an offline password cracker running on a conventional computer can try 7-50 passwords a second, so any commonly used word will be guessed within minutes. Stronger passwords can be difficult to remember and so are often written down on scrapes of paper and sent in emails and they can be difficult to manage for the administrator. As well as that any single form of authentication is going to be vulnerable which is why two-factor authentication is becoming more popular eg. Your can uses a Card and a PIN. Fujitsu laptops offer built-in fingerprint scanners with can be used instead of, or in conjunction with passwords and are more convenient. Fujitsu also offers smart cards that require a PIN code, creating two factors of authentication.