User data table design for multiple login methods

Question

For future scalability, we now need to design a user login form. The login methods include mobile phone number, email, WeChat authorized login, etc. Please tell me how to design the login form

Answer 1

If you register and log in with your phone first, then log in with your phone number, and finally bind your phone to WeChat, how should you bind it?

Answer 2

Can't you just add a few more fields? For example, after getting the WeChat openid, just check it in the database.