Authentication token Based on something the user know EXample: Passphrase, password Based on something the user possesses Example: Smart card or token Based on something the user is Example: BiometricAuthentication Token • Based on something the user know • Example: Passphrase, password • Based on something the user possesses • Example: Smart card or token • Based on something the user is • Example: Biometric Topic 3: User Authentication 102/3/2021