---
summary: 'Anonymous unique occupant identifiers for MUCs'
...

Introduction
============

This module implements [XEP-0421: Anonymous unique occupant identifiers for
MUCs](https://xmpp.org/extensions/xep-0421.html).

TODO
====

- Subject messages

Compatibility
=============

  ------- ------------------
  0.12    Built-in, not needed
  0.11    Works; except in MUC-PMs
  ------- ------------------