PasscodeA numeric password such as a personal identification number (pin).
PasswordA user created string of characters.
Challenge / ResponseAnswers to challenge questions that may include obscure personal information.
Magnetic Stripe CardsCards that contain data such as identification numbers written on magnetic storage media. May include other security features such as an employee id card with a photo on the front.
Card Security CodesCodes that are physically written on a card. Users are asked to input the code to show they are in possession of the card. In some cases, multiple codes are written in a grid and users are asked to enter the code from a particular row and column.
Smart CardsCards that have embedded computing capabilities that typically include authentication credentials such as public key certificates.
Security TokensHardware such as a USB device or mobile phone that generate time-synchronized tokens based on a shared key with an authentication service. Such devices may directly interface with authentication services. Alternatively, they may display a time-synchronized one-time password for users to input.
BiometricsBiometrics such as voice recognition or fingerprint scans.
|Overview: Multi-Factor Authentication|
Verifying identity using multiple factors including knowledge, possessions and biometrics such as voice.
Also Known As
Two-factor authentication2FAThree-factor authentication3FA