We encourage developers to use their EBS to store per-viewer information, using opaque IDs as keys.
We will need to save viewer ids in order to implement the loyalty system (user gains points for watching). We need some kind of a backend system for doing this (probably including setting up a database for storing user information).
From the documentation (https://dev.twitch.tv/docs/extensions#opaque-ids)
We will need to save viewer ids in order to implement the loyalty system (user gains points for watching). We need some kind of a backend system for doing this (probably including setting up a database for storing user information).