
SergeyS.66501 (Customer) asked a question.
want to create paswordless account for user. User should confirm himself with 2FA SMS.
Flow
- user opens Mobile App or enters Web app
- user starts registration process
- user enters his phone number (key thing, user can provide his email later when needed. User is allowed to change his email)
- user clicks "create me" button
- user receives sms code to his phone number
- user enters sms code
- user gets access to Mobile App / Web app
- access token is stored on Mobile app or in Browser's cookies.
what Should I do?
Should I Create User with Authentication Provider from Backend
https://developer.okta.com/docs/api/resources/users/*create-user-with-authentication-provider
and then send SMS to user's phone number to user an access token?
Is there any complete guide for creating and authenticating users for the same "app" (actually, should I create an app for Mobile, Web and Backend or I can use single app)?
Thank you.

Hello Sergey,
it seems like a custom flow and we may need to understand your expectations a bit better to provide you with an answer. For this I'd suggest you to open a Support Case with us, so we can work this out with you. You can give us a call at 1-800-219-0964 or create a ticket through our Help Center portal.
Thank You,
Anna Wtorkiewicz
Technical Support Engineer
Okta Global Customer Care