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Topic starter
31. July 2025 16:30
In IT there are so many authentication options. Here are the 10 commonly used ones.
| Authentication | Description |
|---|---|
| Password-Based | Users enter a username and password. |
| Two-Factor (2FA) | Combines a password with a second factor like a mobile code or app. I just can recommend to add this to your accounts if possible. |
| Multi-Factor (MFA) | USes multiple factors, such as a password, a smartphone and biometrics. |
| Biometric | Uses unique biological characteristics like fingerprints, facial recognition or iris scans. |
| Token-Based | Users posess a physical device (token) that generates a code. Luxtrust in Luxembourg removed this one for banking systems as it is to unsecure. |
| Certificate-Based | Digital certificates authenticate users - often used in enterprise environments. |
| Single Sign-On (SSC) | Allows users to log in once and gain access to multiple systems without re-authenticating |
| Smart Card | Users authenticate by inserting a smart card into a reader and entering a PIN. |
| OAuth/OpenID Connect | USers authenticate via third party services (like Facebook or Google) to access different services. |
| Behavioral | Analyzes patterns un user behaviour (like typing speed, mouse mouvements and so on) to authenticate users. This is often used on sites to avoid sign in tries with a bot. |
