# Second FactorAuthelia provides a number of 2FA methods. This section describes these methods.

## One Time Password

Authelia supports configuring [Time-based One-Time Password](time-based-one-time-password.md)'s.

## Security Key

Authelia supports configuring [WebAuthn](webauthn.md) Security Keys.

## Mobile Push

Authelia supports configuring [Duo](duo.md) to provide a mobile push service.