October CMS - Is it possible to authorize front users only by phone number?

Question

SMS

Good afternoon!
Project for October.
It is necessary to carry out registration and subsequent authorization of users only by phone number and SMS with a code. The rest of the data is secondary, they can be added if desired in your account.
1 - Is there any ready (or close to ready) solution? (and suddenly)
2 - I understand that for the most part, for the front users, they take ready-made RainLab.User, but in its classic form it does not even contain such a field in the database as a phone, adding it is not a problem, but a completely different authorization logic remains . Is it possible to remake it for your task?
3 - Having rummaged inside RainLab.User, there was a feeling that it would be easier to write your authorization from scratch.