---
type: source
title: "URZ: Instant Messaging (Chat) - Matrix"
tags: [instant-messaging, matrix, communication, security]
related: [matrix, element, element-classic, ums, shibboleth]
created: 2026-06-30
updated: 2026-06-30
sources: ["output/rz_uni_greifswald_de_dienste_allgemein_instant_messaging_chat_matrix.md"]
---

# URZ: Instant Messaging (Chat) - Matrix

This source provides the official guidance from the Universitätsrechenzentrum (URZ) regarding the use of the Matrix communication platform at the Universität Greifswald.

## Key Requirements
- **Consent**: Users must provide a formal consent declaration via the [[ums]] (Zentrale Accountverwaltung) before they can use the university's Matrix home server.
- **Authentication**: Access is managed via [[shibboleth]] login.

## Technical Features
- **Protocol**: Based on the decentralized Matrix protocol, allowing integration into the global Matrix network.
- **Encryption**: 
    - Encrypted connections between the client and the server.
    - End-to-End Encryption (E2EE) is the standard for 1:1 conversations and group rooms.
- **Security**: The system is explicitly recommended for the exchange of sensitive data, with a strong warning against using external services like Skype for such purposes.

## Recommended Clients
- **Element**: The primary recommended client for both desktop and mobile.
- **Element-Web-Client**: A browser-based access point provided by the URZ.
- **Mobile Specifics**: Users must use **Element Classic** on mobile devices because **Element X** does not support Shibboleth login.

## Configuration
- Users are directed to set up a **Security Key** (Sicherheitsschlüssel) for their Matrix ID to enable encrypted communication.
