# Multi-factor Authentication

The Multi-factor authentication enhances the security of your Meterian account. This is an optional feature that has to be specifically requested. 

Once the multi-factor authentication (MFA) feature is enabled, on login, users are required to verify their identity via a time-based one-time password (TOTP) sent by email.

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXeIHb-aWvqdkE19ZkvcF8ovTaYqZyCmypG5Cc6Fuy4Scw2oilxDdujoTTxBrh4YJKixmvyWBoJQcOwr1iU8aiH7HWth7KAb4q19Ou9cugBaRWpsHLDsgNjrovYI5IyfO3kjcktcBQ?key=Klyx3TulyGe-IW-r6Y3irA" alt=""><figcaption></figcaption></figure>

Once authenticated the users can set a variety of factors:

* Authenticator app
* SMS
* Backup codes
* Email

Such factors can be configured from the section **Details > User**.

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<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXfd8BlLjFUlMeP6Mfa-lM8ZIoAbOnSvwatANZnLpfD_xmzlf0ejpA2nmPDJzl80RPwgD7K2iKGwZXW1PbJ-3JYLebAo8nXgHcnTjCZESs1uwRAVx7qgowwPuBSGPyWfuIjxtjbjgw?key=Klyx3TulyGe-IW-r6Y3irA" alt=""><figcaption></figcaption></figure>

After the user’s identity has been verified, it will remain valid for for the same device 14 days