# Validation Type

ARKSSPR allows users to choose the default 2FA method for password reset and account unlocking. The user can choose the 2FA method, which is SMS by default.

<figure><img src="/files/82BvC5o4wUwsBU5jE4qz" alt=""><figcaption><p>Validation Type</p></figcaption></figure>

ARKSSPR allows users to choose the default 2FA method for password reset and account unlocking. The user can choose the 2FA method, which is SMS by default.

### **SMS**

[Short Message Service](/master/administration/settings/general-settings/sms-settings.md) is used for 2FA. The user can select the country where the phone number is located from the list. Default is Türkiye.

### E-Mail

Secondary E-Mail is used for 2FA. In order to use this, he/she must define a [secondary e-mail address](/master/administration/my-account/secondary-e-mail.md). [E-Mail settings ](/master/administration/settings/general-settings/e-mail-settings.md)are required.

### Authenticator

Authenticator application is used for 2FA. In order to use this, the mobile authenticator application must be defined on the [Authenticator Definition](/master/administration/my-account/authenticator-definition.md) screen.


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