Most of the time, your users already have a social media account somewhere. It's more convenient for them to log into your app using the same social account instead of filling out the same information again. Firebase provides an authentication feature to reduce the need to build a Facebook authentication module in AngularJS from scratch. As an app developer, you receive several benefits. The following are some of the advantages:
An easier login option for users
An increased registration conversion rate
More information about users with their Facebook accounts
Faster time to market as you don't have to build your own authentication mechanism
You need to have a Facebook account to log in and create a developer app. The account must be verified using a phone number or credit card number. You must make sure that there is a way to verify your account. A Google Voice phone number will not be allowed. Facebook will ask for account...