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PODCAST

Chaos Computer Club - recent events feed

Der Chaos Computer Club ist die größte europäische Hackervereinigung, und seit über 25 Jahren Vermittler im Spannungsfeld technischer und sozialer Entwicklungen.

technology

All Episodes

00:44:52

Commercialising Matrix (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

Can Matrix compete with Big Tech? That remains an open question - but the market conditions in Europe have never been more favorable to sovereign, European software solutions. So how do we build commercially sound companies based on Matrix? This talk will focus on real-world use cases, showcase features built for public-sector customers, explore viable business models, and share hard-earned lessons from bringing Matrix to market. Agenda: 1. Why Meedio? Why Matrix? 2. Going open source - choosing

00:29:02

Large-scale multi-tenancy hosting for TI-Messenger...

Chaos Computer Club - recent events feed ·

2025/10/16

In this talk we will introduce Synapse Pro, the Matrix server for professional environments from Element. Synapse Pro is built to support professional Matrix deployments in terms of scalability, efficiency and high availability. It comes in two flavours, Synapse Pro for Small Hosts and Synapse Pro for Large Hosts. The Small Hosts solution introduces multi-tenancy capabilities in order to host plenty of small Matrix servers in a resource-saving and cost-efficient way. The Large Hosts solution

00:40:22

The German BundesMessenger (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

The BundesMessenger is the soverein communication solution for the German government and armed forces. Developed to be robust, secure and interconnected it serves as the basis for collaboration in the public sector. With a sharp focus on user experience, an uncompromised commitment to free and open-source software and state-of-the-art deployment of cloud technologies, it brings a high-quality messenger to firefighters, soldiers and office workers. Want to know what makes the BundesMessenger quite a

00:26:22

Building Resilient Python Apps for Unreliable...

Chaos Computer Club - recent events feed ·

2025/10/16

In many parts of the world, especially across Africa, software cannot assume a stable internet connection. From rural communities to field agents working in transit or enforcement, the reality is simple: offline is the default, and sync is a luxury. In this talk, we’ll explore how to build offline-first applications using Python — apps that work gracefully when the network doesn’t. Drawing from real-world civic and infrastructure projects scenarios in Nigeria, I’ll walk through techniques to queue,

00:24:53

Nationwide Rollout of Matrix-Based Instant Messaging...

Chaos Computer Club - recent events feed ·

2025/10/16

On July 15, 2025, Germany’s statutory health insurance funds will introduce the Matrix-based instant messaging service TI-M (Telematikinfrastruktur Messenger) into their electronic patient record (ePA) apps. This marks a significant milestone, as Matrix-based messengers will become potentially available to 74 million insured individuals across Germany. This talk will provide an overview of the nationwide rollout, highlighting the technical and organizational challenges faced during the development

00:44:54

Element Call: Redefining conferencing for privacy,...

Chaos Computer Club - recent events feed ·

2025/10/16

Element Call, the flagship MatrixRTC application by Element, is shaping the future of secure, federated calling. As the successor to the traditional call system in Element apps, it now powers large-scale, end-to-end encrypted (E2EE) group calls with improved reliability and seamless federation support. This talk follows up on last year’s introduction of Element Call, showcasing a year of rapid innovation — from new media transport mechanisms to enhanced mobile features — all aimed at making secure

00:30:40

Functional Python: Saving Christmas with itertools &...

Chaos Computer Club - recent events feed ·

2025/10/16

Are you writing nested loops when solving coding challenges? Discover how Python's functional programming toolbox can transform your problem-solving approach. We'll explore functional programming principles through the lens of Advent of Code puzzles, learning to think in streams of data rather than step-by-step instructions. We’ll explore some essential bits from `itertools`, `functools`, and `operator` modules, aiming to write more expressive, debuggable code. Starting with pure functions and lazy

00:14:08

Trialing Matrix within the European Commission for...

Chaos Computer Club - recent events feed ·

2025/10/16

Looking for more resilience and sovereignty, the European Commission has been running a trial Matrix deployment. This talk will present some of the work done. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://cfp.2025.matrix.org/matrix-conf-2025/talk/MDHBPY/

00:26:20

Famedly – Secure Communication in Health Care with...

Chaos Computer Club - recent events feed ·

2025/10/16

Nobody likes fax machines, yet everyone still uses them – that's the reality in German hospitals. Since 2019, Famedly has been challenging this status quo. With our TI Messenger, built on the Matrix protocol, we've created a secure and decentralized alternative. Learn how we're using and extending Matrix to modernize communication in the German healthcare system. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event:

00:44:00

SIP/Element: Unifying Telephony and Modern...

Chaos Computer Club - recent events feed ·

2025/10/16

Our project's main goal was to fill a gap by developing a telephony bridge that natively integrates XiVO enterprise telephony (based on SIP) within the alternative and open-source Matrix/Element ecosystem. Our focus with this bridge is to offer a credible and high-performing alternative to dominant proprietary solutions, such as Teams and its "Telephony System" licenses. XiVO SIP bridge project presented a significant development challenge, underscoring its disruptive and creative nature. This

00:23:29

NeoBoard S: a whiteboard matrix client offering...

Chaos Computer Club - recent events feed ·

2025/10/16

Last year, we introduced NeoToolSuite, Nordeck’s productivity suite of Matrix widgets designed for efficient collaboration and communication. This year, our focus shifts to our flagship product: NeoBoard Standalone. This real-time collaborative whiteboard matrix client has evolved through continuous development and iteration and now it features an immersive infinite canvas that redefines what’s possible for open-source productivity and creative tools. Join us for a tour of NeoBoard’s latest

00:43:50

Matrix as a Bridge (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

European healthcare communication is at a turning point. Fragmented national systems are reaching their limits, while the need for interoperable, secure, and user-friendly digital spaces across borders continues to grow. This talk explores how the open-source Matrix protocol has become a strategic foundation for secure messaging in healthcare — powering derived solutions like TI Messenger and CGM Messenger. Our approach highlights not only the technology itself but also the importance of

00:44:38

Consolidating Germany’s administrative communication:...

Chaos Computer Club - recent events feed ·

2025/10/16

The German public administration aims to consolidate its disparate solutions for G2C and G2B communications and transition to a unified yet decentralized Matrix-based infrastructure. In this talk we will dive into this new federal infrastructure’s target architecture and explore its key requirements, drivers and architecture decisions – including the crucial choice of Matrix as the E2EE communications layer. We further share key learnings from the accompanying political process and reflect on the

00:28:53

Why you, as a Python developer, should learn Rust...

Chaos Computer Club - recent events feed ·

2025/10/16

Why should you, as a Python developer, learn Rust? In this talk, we will explore Rust's compelling answers to this question. Rust offers guaranteed type safety and memory safety without a garbage collector, "fearless concurrency", and incredible performance. We will look into some of Rust's most distinctive features from a Python perspective, including its strict compiler, the ownership and borrowing system, null safety via `Option`, and explicit mutability. We will discover how Rust eliminates

00:36:07

Bytecode and .pyc files (sps25)

Chaos Computer Club - recent events feed ·

2025/10/16

Bytecode, the internal language of instructions used by the interpreter is something that perhaps most Python developers have heard about, but few have dug into. This talk will try to explain the idea behind bytecode and how it works. We will see how to extract bytecode from functions - with `dis` module, and from `.pyc` files (and what is the idea of `__pycache__` directories). Then, the other way around: we’ll check the possibility of building new functions with raw bytes in runtime.about this

00:26:27

Texting Through the Silence: (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

Twenty seconds is a long time when someone can’t breathe. At ESA´s LUNA Analog Facility we turned that reality into a design constraint: a moonwalk emergency with voice cut by design, Matrix/Element carrying clinical guidance across a built-in one-way delay. We tested two styles of instant messaging, open free-text versus a tiny, structured grammar, to coordinate assessment, treatment, and evacuation over a delay-tolerant (store-and-forward) network. The first signals are clear: structure lowers

00:25:41

Matrix’s Role in the German Healthcare System:...

Chaos Computer Club - recent events feed ·

2025/10/16

In this presentation, we will examine processes within the German healthcare system and explore the underlying structural challenges that make intersectoral communication so difficult. We will discuss why Matrix is the ideal protocol for the foundation of this infrastructure and explain how we build upon the Matrix specification to meet healthcare-specific requirements. Special insights will be shared regarding the challenges and lessons learned during the implementation of the TI-Messenger in

00:46:37

Matrix and MLS - Water, Oil and Mayonnaise...

Chaos Computer Club - recent events feed ·

2025/10/16

MLS and Matrix don't mix well. But why is that and what can we do about it? Since I got to touch that area a bit, I'll try to give some answers, but don't expect solutions. We will be looking how MLS and Matrix work internally, how a tree is a DAG but a DAG not a tree and maybe we will have some glorious idea or get frustrated. No promises! Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://cfp.2025.matrix.org/matrix-conf-2025/talk/Z9B878/

00:25:27

The TI-Messenger Story (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

In this talk, we’ll take you through the real-world journey of developing and approving a TI-Messenger - a secure, interoperable messaging application built on top of the Matrix protocol for use within Germany’s healthcare system. What began as am idea soon grew into a tightly regulated, multi-stakeholder project, with high demands on privacy, trust, and compliance. This session is less about features and more about transformation. It’s a case study of how we shaped a Matrix-based messenger to meet

00:22:15

Sweden's Public Sector in Transition (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/16

For decades, government agencies have relied on proprietary, siloed communication systems. Today, several Swedish initiatives are exploring new paths forward. First, we will provide details on the latest developments within SAFOS, a service designed to establish a potential national standard for secure messaging, video conferencing, and real-time collaboration. Second, we will share insights from eSam — a voluntary collaboration between public agencies — where a multi-agency task force is

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