I'm trying to do a mobile app which will talk to the backend server based on laravel frame to perform CRUD operations.

however, i also need to authenticate users before they're allowed to perform such operations

also, I need their user ID by calling Auth::user()->id to keep track of the operations they have done so far

so my question is, should I just use Auth::check() to check if the user is login, or should I use other tools like Oauth2 to do that? from my understanding, rest is stateless and therefore it won't store anything inside the session, so I not sure if Auth::check works if there are multiple users using. Right now there's only one tester for the mobile counterpart so I can't be sure whether the auth::check() could be independent of the users

if oauth, which one would you guys recommend?