multi-factor authentication

• SSO stands for Single Sign On
• IAM stands for Identity and Access Management
• Multi-factor authentication involves verifying one is one's self by more that one of three means:
  1. Something the user knows such as a username, an email address, or a password
  2. Something the user has such as a hardware token, a virtual token, a smart card or USB dongle
  3. Something the user is such as a thumbprint scanner or an iris scanner