How to add a SignUp or SignIN button in my game app?

Solar2D Android
#1

I want to add a signup or signIN button in my game app like there is in COC game by which the users data will be safe and record their progress in the game.

#2

You will need a backend server that supports that.  Either code your own or use a BaaS providers

#3

You will need a backend server that supports that.  Either code your own or use a BaaS providers