OAuth
OAuth
| Factor | Description | 
|---|---|
| Knowledge Factor | Username / Password, Security codes, Pin Codes, Security Questions,  everything rely on the person's knowledge | 
| Possession Factor | Hard Tokens, Soft Tokens, OTP | 
| Qualities Factor | biometrics, face, voice, test the person's inherent qualities | 
| Name | Description | 
|---|---|
| Multifactor Authentication (MFA) | Rely on more than one factor to authenticate a user. | 
| Two-Factor Authentication (2FA) | Rely on 2 factor to authenticate a user. | 
| Type | Description | 
|---|---|
| Hard tokens | The special hardware devices that you attach to your device to authenticate yourself | 
| Soft tokens | Don't have any authentication-specific device | 
OAuth