Firebase : Prevent same account on multiple devices

Question

I\'m working on an angular app and I use Firebase to authenticate my users. I would like to know how I could prevent my users to give their account to other people. Also I w

Answer 1

• Actually, you can't prevent your user to share their account with other people.
• But, you can make sure your user can only sign in on only one device at the same time.
• Normally, you can't sign out an user who already login, unless you can notify your client about the message.
• But Just as @DoesData said, you can keep an sign in status data, and when the client visit the server, it can discover that it already be signed out, or others already singed in.