Discourse Fingerprint plugin is a tool for administrators and moderators that help combating internet trolls and their identification-evasion techniques.
Follow Install a Plugin
how-to from the official Discourse Meta, using
git clone https://github.com/discourse/discourse-fingerprint.git
as the plugin command.
The plugin creates a dashboard that can be accessed by administrators by going to Settings > Plugins and selecting Fingerprint matcher from the left side.
Administrator may check individual users by typing in their name or by looking over the latest discovered matches.
If you have issues or suggestions for the plugin, please bring them up on Discourse Meta.