Unity Authentication demo project

Budget: 1500 UAH Deadline: 5 days

Hello, I have extensive experience working with Unity, essentially 90% of my freelance projects have been completed in this category. I can easily help you understand the setup of authorization in all popular ways. I would like to clarify more details about the implementation. Should the offline login attempt be handled in any way? Should each authorization method in the demo create a new user, or just add an alternative login method for an already registered user?

Budget: 1000 UAH Deadline: 3 days

Good day
I am a game developer on Unity and 3D graphics
I have already created login panels multiple times, with account linking (via Firebase), and I want to say that it's not all that easy
If it's just email + password login, I can do it quickly, but if it's Google, Apple, Game Center, Google Play, it will take a long time since in each of these projects the owner must register their project, and only after approval will you be able to log in
Message me privately, and I will explain everything in more detail if needed

I set the price and deadlines conditionally; we will discuss them privately.