Anonymize UserId using salt and sha1 hash.
This plugin is using a salt from configuration file and sha1 hash function to anonymize the UserId.
FAQ
Are there any settings?
No. Once the plugin is activated, it starts to do its job.
Is it going to break my existing tracking codes?
No. Matomo (Piwik) will continue to work as normal with the hashed user id in the tracking requests.