I developed a software that includes a Laravel component that has a website, and then 2 apps (iOS and Android) that consume services from that Laravel component. I have users on my database schema, those users come from all system components. Now I want to add Facebook Login for users so that they don't have to fill in their information. But I want to add this login to my website and my 2 apps.
What do I need to do on my Back-end and database to integrate the solutions? so that if a user logins with Facebook on my website and then logins with facebook on my iOS app, I can see they are the same?.
Thank you