# Account Security & Sign-in

Protect your account with two-factor authentication and passkeys.

[← TotalCtrl Help Center](https://help.totalctrl.app/en-US/)

## Articles

- [Backup codes](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/backup-codes)
- [Two-factor authentication (2FA): an overview](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/two-factor-authentication-overview)
- [Set up an authenticator app](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/set-up-authenticator-app)
- [Configure an SMS provider (administrators)](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/configure-sms-provider-admin)
- [Troubleshooting 2FA and passkeys](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/troubleshooting-2fa-passkeys)
- [Sign in with a passkey](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/sign-in-with-a-passkey)
- [Sign in with two-factor authentication](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/sign-in-with-2fa)
- [Passkeys: what they are and why use them](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/passkeys-overview)
- [Text message (SMS) two-factor authentication](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/sms-two-factor)
- [Add a passkey to your account](https://help.totalctrl.app/hc/totalctrl/totalctrl-help-center/en-US/articles/add-a-passkey)