How to set up login in Members Area with a one-time verification code?

By default, users sign up for the Members Area in Tilda using a permanent password. If you need, you can select the option of logging in to the Members Area with a one-time verification code that is sent to a user via SMS or email. 

To configure this, in the Members Area Settings, go to the "Advanced" tab, find the "Signup & Login Methods" in the list, and click on the "Edit" button:

Then select the identifier and login method that suits you best:

Detailed guide: How to set up login and signup in Members Area with a mobile phone number