Multi-factor Authentication

Authentication – Authentication is the process of proving claimed identity of an entity (people, devices, services.
It is one of the four elements (Identification, Authentication, Authorization, Accountability (IAAA)) of identity and access management (IAM) systems.

Authentication factors include:

• Something you know: password,PIN, passphrase
• Something you have: smartcard, hardware token, memory card,
• Something you are: Biometric- Fingerprint, Iris/Retina patterns, Face/palm scans
• Something you do: Keystroke, signature,
• Somewhere you are: Geo-location, timezone, phone number

Multi-factor authentication is the use of two or more of these factors to authenticate entities and safeguard assets. Unlike single-factor, It will be harder for attackers to break into systems protected by multi-factor authentication.