• Establishing a Matrix Chat
  • What is Matrix?
  • Sign in
    • Sign in to the desktop version
    • Sign in to the web interface
      • With TUM login data
      • With CIT login data
  • Create new chat room
  • Invite People into the chat

Establishing a Matrix Chat

What is Matrix?

Matrix is a chat system very similar to E-Mail. People have their account on one server but can write messages to anyone on other servers. For example @someprofessor:tum.de can communicate with @someresearcher:lmu.de.

You can create end-to-end encrypted personal or group chats that are not stored and dependent on a central authority like most other tools (ms teams, whatsapp, zoom, ...). All your messages are synced between all your devices  - web clients, desktop clients, smartphone apps. For additional security, encryption keys of contacts can be verified and then stored as trusted.  

You can use either the desktop version or the web interface of matrix.

Sign in

Sign in to the desktop version

 Here you can find installation for IOS, Android, Mac, Linux and Windows. 

If you have a CIT or TUM Account, you can sign in wit your login data.

For this you need the following homeserver:

And the login data as follow:

CIT:  

TUM:

Sign in to the web interface

 If you have a CIT or TUM account you can sign in to the web interface of the CIT or TUM otherwise you can create a matrix account freely on https://app.element.io .

With TUM login data

With CIT login data

Create new chat room

If you want to create a new chat room, first click the +-Button next to Rooms in the program or on the web inferface and then enter the name of the chat room. You can also block users on other servers from joining the room or enable encryption. You can't change these settings later. 

The chat room TestRoom is private, so it is not visible to others and participants can only join the room by invitation. If you create a public room, anyone will be able to find and join this room. You can change this at any time from room settings.

Invite People into the chat

You can create either private or group chats and invite other people to the chat room. You can also join to these group chats to participate in existing conversations. If they are already on Matrix, enter their Matrix ID (like @musterma:cit.tum.de). If they are not, enter their email address and they will be invited to join.

Note: If you have only released the room for the CIT or TUM user, only people who are registered on the CIT or TUM server can access this room.

Click the button Invite to this room to invite people to the group chat.  

If you want to chat with a member privatly, click on the +-Button beside People in the program or on the web interface.

Enter the following Matrix ID's in the opened window:

For CIT Accounts: e.g. @musterma:cit.tum.de

For TUM Accounts: e.g. @lr89rbg:tum.de

For other Accounts:  e.g. @musterma:matrix.org

and send the invitation to the e-mail address of the person to be invited. The invitation will appear in the Matrix chat window and must be accepted.